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The Essential Guide o CSS and HTML Web Design

2010-01-08T09:26:00.000-08:00

Click Here Download The Essential Guide o CSS and HTML Web Design

Internet Protocol version 6 (IPv6)

2009-11-04T20:02:00.000-08:00

Internet Protocol version 6 (IPv6) is the next-generation Internet Protocol version designated as the successor to IPv4, the first implementation used in the Internet and still in dominant use currently. It is an Internet Layer protocol for packet-switched internetworks. The main driving force for the redesign of Internet Protocol was the foreseeable IPv4 address exhaustion. IPv6 was defined in December 1998 by the Internet Engineering Task Force (IETF) with the publication of an Internet standard specification, RFC 2460.

IPv6 has a vastly larger address space than IPv4. This results from the use of a 128-bit address, whereas IPv4 uses only 32 bits. The new address space thus supports 2128 (about 3.4×1038) addresses. This expansion provides flexibility in allocating addresses and routing traffic and eliminates the primary need for network address translation (NAT), which gained widespread deployment as an effort to alleviate IPv4 address exhaustion.

IPv6 also implements new features that simplify aspects of address assignment (stateless address autoconfiguration) and network renumbering (prefix and router announcements) when changing Internet connectivity providers. The IPv6 subnet size has been standardized by fixing the size of the host identifier portion of an address to 64 bits to facilitate an automatic mechanism for forming the host identifier from Link Layer media addressing information (MAC address).

Network security is integrated into the design of the IPv6 architecture. Internet Protocol Security (IPsec) was originally developed for IPv6, but found widespread optional deployment first in IPv4 (into which it was back-engineered). The IPv6 specifications mandate IPsec implementation as a fundamental interoperability requirement.

In December 2008, despite marking its 10th anniversary as a Standards Track protocol, IPv6 was only in its infancy in terms of general worldwide deployment. A 2008 study by Google Inc. indicated that penetration was still less than one percent of Internet-enabled hosts in any country. IPv6 has been implemented on all major operating systems in use in commercial, business, and home consumer environments.

Google Chrome Short Cut Keys

2009-09-01T23:31:00.001-07:00

Ctrl+N	Open a new window
Ctrl+Shift+N	Open a new window in incognito mode
Press Ctrl, and click a link	Open link in a new tab
Press Shift, and click a link	Open link in a new window
Alt+F4	Close current window
Ctrl+T	Open a new tab
Ctrl+Shift+T	Reopen the last tab you’ve closed. Google Chrome remembers the last 10 tabs you’ve closed.
Drag link to tab	Open link in specified tab
Drag link to space between tabs	Open link in a new tab in the specified position on the tab strip
Ctrl+1 through Ctrl+8	Switch to the tab at the specified position number. The number you press represents a position on the tab strip.
Ctrl+9	Switch to the last tab
Ctrl+Tab or Ctrl+PgDown	Switch to the next tab
Ctrl+Shift+Tab orCtrl+PgUp	Switch to the previous tab
Ctrl+W or Ctrl+F4	Close current tab or pop-up
Alt+Home	Open your homepage
Ctrl+O, then select file	Open a file from your computer in Google Chrome
Type a search term	Perform a search using your default search engine
Type the part of the web address that’s between ‘www.’ and ‘.com’, then press Ctrl+Enter	Add www.and .com to your input in the address bar and open the web address
Type a search engine keyword or URL, press Tab, then type a search term	Perform a search using the search engine associated with the keyword or the URL. Google Chrome prompts you to press Tab if it recognizes the search engine you’re trying to use.
F6 or Ctrl+L or Alt+D	Highlight content in the web address area
Type a web address, then press Alt+Enter	Open your web address in a new tab
Ctrl+B	Toggle bookmarks bar on and off
Ctrl+H	View the History page
Ctrl+J	View the Downloads page
Shift+Escape	View the Task manager
Ctrl+P	Print your current page
F5	Reload current page
Esc	Stop page loading
Ctrl+F5 or Shift+F5	Reload current page, ignoring cached content
Press Alt, and click a link	Download link
Ctrl+F	Open find-in-page box
Ctrl+G or F3	Find next match for your input in the find-in-page box
Ctrl+Shift+G or Shift+F3	Find previous match for your input in the find-in-page box
Ctrl+U	View source
Drag link to bookmarks bar	Bookmark the link
Ctrl+D	Bookmark your current webpage
Ctrl++	Make text larger
Ctrl+-	Make text smaller
Ctrl+0	Return to normal text size
Highlight content, then press Ctrl+C	Copy content to the clipboard
Place your cursor in a text field, then press Ctrl+V or Shift+Insert	Paste current content from the clipboard
Place your cursor in a text field, then press Ctrl+Shift+V	Paste current content from the clipboard without formatting
Highlight content in a text field, then press Ctrl+X or Shift+Delete	Delete the content and copy it to the clipboard
Backspace, or press Alt and the left arrow together	Go to the previous page in your browsing history for the tab
Shift+Backspace, or press Alt and the right arrow together	Go to the next page in your browsing history for the tab
Ctrl+K or Ctrl+E	Places a ‘?’ in the address bar. Type a search term after the ‘?’ to perform a search using your default search engine.
Place your cursor in the address bar, then press Ctrl and the left arrow together	Jump to the previous word in the address bar
Place your cursor in the address bar, then press Ctrl and the right arrow together	Jump to the next word in the address bar
Place your cursor in the address bar, then press Ctrl+Backspace	Delete the previous word in the address bar
Space bar	Scroll down the web page
Home	Go to the top of the page
End	Go to the bottom of the page

Mime Types

2009-08-31T22:39:00.000-07:00

Extension	MIME type
.3dm	x-world/x-3dmf
.3dmf	x-world/x-3dmf
.a	application/octet-stream
.aab	application/x-authorware-bin
.aam	application/x-authorware-map
.aas	application/x-authorware-seg
.abc	text/vnd.abc
.acgi	text/html
.afl	video/animaflex
.ai	application/postscript
.aif	audio/aiff
.aif	audio/x-aiff
.aifc	audio/aiff
.aifc	audio/x-aiff
.aiff	audio/aiff
.aiff	audio/x-aiff
.aim	application/x-aim
.aip	text/x-audiosoft-intra
.ani	application/x-navi-animation
.aos	application/x-nokia-9000-communicator-add-on-software
.aps	application/mime
.arc	application/octet-stream
.arj	application/arj
.arj	application/octet-stream
.art	image/x-jg
.asf	video/x-ms-asf
.asm	text/x-asm
.asp	text/asp
.asx	application/x-mplayer2
.asx	video/x-ms-asf
.asx	video/x-ms-asf-plugin
.au	audio/basic
.au	audio/x-au
.avi	application/x-troff-msvideo
.avi	video/avi
.avi	video/msvideo
.avi	video/x-msvideo
.avs	video/avs-video
.bcpio	application/x-bcpio
.bin	application/mac-binary
.bin	application/macbinary
.bin	application/octet-stream
.bin	application/x-binary
.bin	application/x-macbinary
.bm	image/bmp
.bmp	image/bmp
.bmp	image/x-windows-bmp
.boo	application/book
.book	application/book
.boz	application/x-bzip2
.bsh	application/x-bsh
.bz	application/x-bzip
.bz2	application/x-bzip2
.c	text/plain
.c	text/x-c
.c++	text/plain
.cat	application/vnd.ms-pki.seccat
.cc	text/plain
.cc	text/x-c
.ccad	application/clariscad
.cco	application/x-cocoa
.cdf	application/cdf
.cdf	application/x-cdf
.cdf	application/x-netcdf
.cer	application/pkix-cert
.cer	application/x-x509-ca-cert
.cha	application/x-chat
.chat	application/x-chat
.class	application/java
.class	application/java-byte-code
.class	application/x-java-class
.com	application/octet-stream
.com	text/plain
.conf	text/plain
.cpio	application/x-cpio
.cpp	text/x-c
.cpt	application/mac-compactpro
.cpt	application/x-compactpro
.cpt	application/x-cpt
.crl	application/pkcs-crl
.crl	application/pkix-crl
.crt	application/pkix-cert
.crt	application/x-x509-ca-cert
.crt	application/x-x509-user-cert
.csh	application/x-csh
.csh	text/x-script.csh
.css	application/x-pointplus
.css	text/css
.cxx	text/plain
.dcr	application/x-director
.deepv	application/x-deepv
.def	text/plain
.der	application/x-x509-ca-cert
.dif	video/x-dv
.dir	application/x-director
.dl	video/dl
.dl	video/x-dl
.doc	application/msword
.dot	application/msword
.dp	application/commonground
.drw	application/drafting
.dump	application/octet-stream
.dv	video/x-dv
.dvi	application/x-dvi
.dwf	drawing/x-dwf (old)
.dwf	model/vnd.dwf
.dwg	application/acad
.dwg	image/vnd.dwg
.dwg	image/x-dwg
.dxf	application/dxf
.dxf	image/vnd.dwg
.dxf	image/x-dwg
.dxr	application/x-director
.el	text/x-script.elisp
.elc	application/x-bytecode.elisp (compiled elisp)
.elc	application/x-elc
.env	application/x-envoy
.eps	application/postscript
.es	application/x-esrehber
.etx	text/x-setext
.evy	application/envoy
.evy	application/x-envoy
.exe	application/octet-stream
.f	text/plain
.f	text/x-fortran
.f77	text/x-fortran
.f90	text/plain
.f90	text/x-fortran
.fdf	application/vnd.fdf
.fif	application/fractals
.fif	image/fif
.fli	video/fli
.fli	video/x-fli
.flo	image/florian
.flx	text/vnd.fmi.flexstor
.fmf	video/x-atomic3d-feature
.for	text/plain
.for	text/x-fortran
.fpx	image/vnd.fpx
.fpx	image/vnd.net-fpx
.frl	application/freeloader
.funk	audio/make
.g	text/plain
.g3	image/g3fax
.gif	image/gif
.gl	video/gl
.gl	video/x-gl
.gsd	audio/x-gsm
.gsm	audio/x-gsm
.gsp	application/x-gsp
.gss	application/x-gss
.gtar	application/x-gtar
.gz	application/x-compressed
.gz	application/x-gzip
.gzip	application/x-gzip
.gzip	multipart/x-gzip
.h	text/plain
.h	text/x-h
.hdf	application/x-hdf
.help	application/x-helpfile
.hgl	application/vnd.hp-hpgl
.hh	text/plain
.hh	text/x-h
.hlb	text/x-script
.hlp	application/hlp
.hlp	application/x-helpfile
.hlp	application/x-winhelp
.hpg	application/vnd.hp-hpgl
.hpgl	application/vnd.hp-hpgl
.hqx	application/binhex
.hqx	application/binhex4
.hqx	application/mac-binhex
.hqx	application/mac-binhex40
.hqx	application/x-binhex40
.hqx	application/x-mac-binhex40
.hta	application/hta
.htc	text/x-component
.htm	text/html
.html	text/html
.htmls	text/html
.htt	text/webviewhtml
.htx	text/html
.ice	x-conference/x-cooltalk
.ico	image/x-icon
.idc	text/plain
.ief	image/ief
.iefs	image/ief
.iges	application/iges
.iges	model/iges
.igs	application/iges
.igs	model/iges
.ima	application/x-ima
.imap	application/x-httpd-imap
.inf	application/inf
.ins	application/x-internett-signup
.ip	application/x-ip2
.isu	video/x-isvideo
.it	audio/it
.iv	application/x-inventor
.ivr	i-world/i-vrml
.ivy	application/x-livescreen
.jam	audio/x-jam
.jav	text/plain
.jav	text/x-java-source
.java	text/plain
.java	text/x-java-source
.jcm	application/x-java-commerce
.jfif	image/jpeg
.jfif	image/pjpeg
.jfif-tbnl	image/jpeg
.jpe	image/jpeg
.jpe	image/pjpeg
.jpeg	image/jpeg
.jpeg	image/pjpeg
.jpg	image/jpeg
.jpg	image/pjpeg
.jps	image/x-jps
.js	application/x-javascript
.jut	image/jutvision
.kar	audio/midi
.kar	music/x-karaoke
.ksh	application/x-ksh
.ksh	text/x-script.ksh
.la	audio/nspaudio
.la	audio/x-nspaudio
.lam	audio/x-liveaudio
.latex	application/x-latex
.lha	application/lha
.lha	application/octet-stream
.lha	application/x-lha
.lhx	application/octet-stream
.list	text/plain
.lma	audio/nspaudio
.lma	audio/x-nspaudio
.log	text/plain
.lsp	application/x-lisp
.lsp	text/x-script.lisp
.lst	text/plain
.lsx	text/x-la-asf
.ltx	application/x-latex
.lzh	application/octet-stream
.lzh	application/x-lzh
.lzx	application/lzx
.lzx	application/octet-stream
.lzx	application/x-lzx
.m	text/plain
.m	text/x-m
.m1v	video/mpeg
.m2a	audio/mpeg
.m2v	video/mpeg
.m3u	audio/x-mpequrl
.man	application/x-troff-man
.map	application/x-navimap
.mar	text/plain
.mbd	application/mbedlet
.mc$	application/x-magic-cap-package-1.0
.mcd	application/mcad
.mcd	application/x-mathcad
.mcf	image/vasa
.mcf	text/mcf
.mcp	application/netmc
.me	application/x-troff-me
.mht	message/rfc822
.mhtml	message/rfc822
.mid	application/x-midi
.mid	audio/midi
.mid	audio/x-mid
.mid	audio/x-midi
.mid	music/crescendo
.mid	x-music/x-midi
.midi	application/x-midi
.midi	audio/midi
.midi	audio/x-mid
.midi	audio/x-midi
.midi	music/crescendo
.midi	x-music/x-midi
.mif	application/x-frame
.mif	application/x-mif
.mime	message/rfc822
.mime	www/mime
.mjf	audio/x-vnd.audioexplosion.mjuicemediafile
.mjpg	video/x-motion-jpeg
.mm	application/base64
.mm	application/x-meme
.mme	application/base64
.mod	audio/mod
.mod	audio/x-mod
.moov	video/quicktime
.mov	video/quicktime
.movie	video/x-sgi-movie
.mp2	audio/mpeg
.mp2	audio/x-mpeg
.mp2	video/mpeg
.mp2	video/x-mpeg
.mp2	video/x-mpeq2a
.mp3	audio/mpeg3
.mp3	audio/x-mpeg-3
.mp3	video/mpeg
.mp3	video/x-mpeg
.mpa	audio/mpeg
.mpa	video/mpeg
.mpc	application/x-project
.mpe	video/mpeg
.mpeg	video/mpeg
.mpg	audio/mpeg
.mpg	video/mpeg
.mpga	audio/mpeg
.mpp	application/vnd.ms-project
.mpt	application/x-project
.mpv	application/x-project
.mpx	application/x-project
.mrc	application/marc
.ms	application/x-troff-ms
.mv	video/x-sgi-movie
.my	audio/make
.mzz	application/x-vnd.audioexplosion.mzz
.nap	image/naplps
.naplps	image/naplps
.nc	application/x-netcdf
.ncm	application/vnd.nokia.configuration-message
.nif	image/x-niff
.niff	image/x-niff
.nix	application/x-mix-transfer
.nsc	application/x-conference
.nvd	application/x-navidoc
.o	application/octet-stream
.oda	application/oda
.omc	application/x-omc
.omcd	application/x-omcdatamaker
.omcr	application/x-omcregerator
.p	text/x-pascal
.p10	application/pkcs10
.p10	application/x-pkcs10
.p12	application/pkcs-12
.p12	application/x-pkcs12
.p7a	application/x-pkcs7-signature
.p7c	application/pkcs7-mime
.p7c	application/x-pkcs7-mime
.p7m	application/pkcs7-mime
.p7m	application/x-pkcs7-mime
.p7r	application/x-pkcs7-certreqresp
.p7s	application/pkcs7-signature
.part	application/pro_eng
.pas	text/pascal
.pbm	image/x-portable-bitmap
.pcl	application/vnd.hp-pcl
.pcl	application/x-pcl
.pct	image/x-pict
.pcx	image/x-pcx
.pdb	chemical/x-pdb
.pdf	application/pdf
.pfunk	audio/make
.pfunk	audio/make.my.funk
.pgm	image/x-portable-graymap
.pgm	image/x-portable-greymap
.pic	image/pict
.pict	image/pict
.pkg	application/x-newton-compatible-pkg
.pko	application/vnd.ms-pki.pko
.pl	text/plain
.pl	text/x-script.perl
.plx	application/x-pixclscript
.pm	image/x-xpixmap
.pm	text/x-script.perl-module
.pm4	application/x-pagemaker
.pm5	application/x-pagemaker
.png	image/png
.pnm	application/x-portable-anymap
.pnm	image/x-portable-anymap
.pot	application/mspowerpoint
.pot	application/vnd.ms-powerpoint
.pov	model/x-pov
.ppa	application/vnd.ms-powerpoint
.ppm	image/x-portable-pixmap
.pps	application/mspowerpoint
.pps	application/vnd.ms-powerpoint
.ppt	application/mspowerpoint
.ppt	application/powerpoint
.ppt	application/vnd.ms-powerpoint
.ppt	application/x-mspowerpoint
.ppz	application/mspowerpoint
.pre	application/x-freelance
.prt	application/pro_eng
.ps	application/postscript
.psd	application/octet-stream
.pvu	paleovu/x-pv
.pwz	application/vnd.ms-powerpoint
.py	text/x-script.phyton
.pyc	applicaiton/x-bytecode.python
.qcp	audio/vnd.qcelp
.qd3	x-world/x-3dmf
.qd3d	x-world/x-3dmf
.qif	image/x-quicktime
.qt	video/quicktime
.qtc	video/x-qtc
.qti	image/x-quicktime
.qtif	image/x-quicktime
.ra	audio/x-pn-realaudio
.ra	audio/x-pn-realaudio-plugin
.ra	audio/x-realaudio
.ram	audio/x-pn-realaudio
.ras	application/x-cmu-raster
.ras	image/cmu-raster
.ras	image/x-cmu-raster
.rast	image/cmu-raster
.rexx	text/x-script.rexx
.rf	image/vnd.rn-realflash
.rgb	image/x-rgb
.rm	application/vnd.rn-realmedia
.rm	audio/x-pn-realaudio
.rmi	audio/mid
.rmm	audio/x-pn-realaudio
.rmp	audio/x-pn-realaudio
.rmp	audio/x-pn-realaudio-plugin
.rng	application/ringing-tones
.rng	application/vnd.nokia.ringing-tone
.rnx	application/vnd.rn-realplayer
.roff	application/x-troff
.rp	image/vnd.rn-realpix
.rpm	audio/x-pn-realaudio-plugin
.rt	text/richtext
.rt	text/vnd.rn-realtext
.rtf	application/rtf
.rtf	application/x-rtf
.rtf	text/richtext
.rtx	application/rtf
.rtx	text/richtext
.rv	video/vnd.rn-realvideo
.s	text/x-asm
.s3m	audio/s3m
.saveme	application/octet-stream
.sbk	application/x-tbook
.scm	application/x-lotusscreencam
.scm	text/x-script.guile
.scm	text/x-script.scheme
.scm	video/x-scm
.sdml	text/plain
.sdp	application/sdp
.sdp	application/x-sdp
.sdr	application/sounder
.sea	application/sea
.sea	application/x-sea
.set	application/set
.sgm	text/sgml
.sgm	text/x-sgml
.sgml	text/sgml
.sgml	text/x-sgml
.sh	application/x-bsh
.sh	application/x-sh
.sh	application/x-shar
.sh	text/x-script.sh
.shar	application/x-bsh
.shar	application/x-shar
.shtml	text/html
.shtml	text/x-server-parsed-html
.sid	audio/x-psid
.sit	application/x-sit
.sit	application/x-stuffit
.skd	application/x-koan
.skm	application/x-koan
.skp	application/x-koan
.skt	application/x-koan
.sl	application/x-seelogo
.smi	application/smil
.smil	application/smil
.snd	audio/basic
.snd	audio/x-adpcm
.sol	application/solids
.spc	application/x-pkcs7-certificates
.spc	text/x-speech
.spl	application/futuresplash
.spr	application/x-sprite
.sprite	application/x-sprite
.src	application/x-wais-source
.ssi	text/x-server-parsed-html
.ssm	application/streamingmedia
.sst	application/vnd.ms-pki.certstore
.step	application/step
.stl	application/sla
.stl	application/vnd.ms-pki.stl
.stl	application/x-navistyle
.stp	application/step
.sv4cpio	application/x-sv4cpio
.sv4crc	application/x-sv4crc
.svf	image/vnd.dwg
.svf	image/x-dwg
.svr	application/x-world
.svr	x-world/x-svr
.swf	application/x-shockwave-flash
.t	application/x-troff
.talk	text/x-speech
.tar	application/x-tar
.tbk	application/toolbook
.tbk	application/x-tbook
.tcl	application/x-tcl
.tcl	text/x-script.tcl
.tcsh	text/x-script.tcsh
.tex	application/x-tex
.texi	application/x-texinfo
.texinfo	application/x-texinfo
.text	application/plain
.text	text/plain
.tgz	application/gnutar
.tgz	application/x-compressed
.tif	image/tiff
.tif	image/x-tiff
.tiff	image/tiff
.tiff	image/x-tiff
.tr	application/x-troff
.tsi	audio/tsp-audio
.tsp	application/dsptype
.tsp	audio/tsplayer
.tsv	text/tab-separated-values
.turbot	image/florian
.txt	text/plain
.uil	text/x-uil
.uni	text/uri-list
.unis	text/uri-list
.unv	application/i-deas
.uri	text/uri-list
.uris	text/uri-list
.ustar	application/x-ustar
.ustar	multipart/x-ustar
.uu	application/octet-stream
.uu	text/x-uuencode
.uue	text/x-uuencode
.vcd	application/x-cdlink
.vcs	text/x-vcalendar
.vda	application/vda
.vdo	video/vdo
.vew	application/groupwise
.viv	video/vivo
.viv	video/vnd.vivo
.vivo	video/vivo
.vivo	video/vnd.vivo
.vmd	application/vocaltec-media-desc
.vmf	application/vocaltec-media-file
.voc	audio/voc
.voc	audio/x-voc
.vos	video/vosaic
.vox	audio/voxware
.vqe	audio/x-twinvq-plugin
.vqf	audio/x-twinvq
.vql	audio/x-twinvq-plugin
.vrml	application/x-vrml
.vrml	model/vrml
.vrml	x-world/x-vrml
.vrt	x-world/x-vrt
.vsd	application/x-visio
.vst	application/x-visio
.vsw	application/x-visio
.w60	application/wordperfect6.0
.w61	application/wordperfect6.1
.w6w	application/msword
.wav	audio/wav
.wav	audio/x-wav
.wb1	application/x-qpro
.wbmp	image/vnd.wap.wbmp
.web	application/vnd.xara
.wiz	application/msword
.wk1	application/x-123
.wmf	windows/metafile
.wml	text/vnd.wap.wml
.wmlc	application/vnd.wap.wmlc
.wmls	text/vnd.wap.wmlscript
.wmlsc	application/vnd.wap.wmlscriptc
.word	application/msword
.wp	application/wordperfect
.wp5	application/wordperfect
.wp5	application/wordperfect6.0
.wp6	application/wordperfect
.wpd	application/wordperfect
.wpd	application/x-wpwin
.wq1	application/x-lotus
.wri	application/mswrite
.wri	application/x-wri
.wrl	application/x-world
.wrl	model/vrml
.wrl	x-world/x-vrml
.wrz	model/vrml
.wrz	x-world/x-vrml
.wsc	text/scriplet
.wsrc	application/x-wais-source
.wtk	application/x-wintalk
.xbm	image/x-xbitmap
.xbm	image/x-xbm
.xbm	image/xbm
.xdr	video/x-amt-demorun
.xgz	xgl/drawing
.xif	image/vnd.xiff
.xl	application/excel
.xla	application/excel
.xla	application/x-excel
.xla	application/x-msexcel
.xlb	application/excel
.xlb	application/vnd.ms-excel
.xlb	application/x-excel
.xlc	application/excel
.xlc	application/vnd.ms-excel
.xlc	application/x-excel
.xld	application/excel
.xld	application/x-excel
.xlk	application/excel
.xlk	application/x-excel
.xll	application/excel
.xll	application/vnd.ms-excel
.xll	application/x-excel
.xlm	application/excel
.xlm	application/vnd.ms-excel
.xlm	application/x-excel
.xls	application/excel
.xls	application/vnd.ms-excel
.xls	application/x-excel
.xls	application/x-msexcel
.xlt	application/excel
.xlt	application/x-excel
.xlv	application/excel
.xlv	application/x-excel
.xlw	application/excel
.xlw	application/vnd.ms-excel
.xlw	application/x-excel
.xlw	application/x-msexcel
.xm	audio/xm
.xml	application/xml
.xml	text/xml
.xmz	xgl/movie
.xpix	application/x-vnd.ls-xpix
.xpm	image/x-xpixmap
.xpm	image/xpm
.x-png	image/png
.xsr	video/x-amt-showrun
.xwd	image/x-xwd
.xwd	image/x-xwindowdump
.xyz	chemical/x-pdb
.z	application/x-compress
.z	application/x-compressed
.zip	application/x-compressed
.zip	application/x-zip-compressed
.zip	application/zip
.zip	multipart/x-zip
.zoo	application/octet-stream
.zsh	text/x-script.zsh

Adding Meta Tags to the Head in ASP.NET 2.0

2009-08-26T00:29:00.000-07:00

You can easily create a HtmlMeta object and add it to the Controls collection in the HtmlHead class exposed via Page.Header. Here's a few samples:

HtmlMeta metaKeyWords = new HtmlMeta();
metaKeyWords.Name = "keywords";
metaKeyWords.Content = "keywords goes here";
this.Header.Controls.Add(metaKeyWords);

HtmlMeta metaDesription = new HtmlMeta();
metaDesription.Name = "description";
metaDesription.Content = "description goes here";
this.Header.Controls.Add(metaDesription);

Failed to access IIS metabase problem

2009-08-25T04:08:00.001-07:00

Cause:
When you install IIS AFTER .NET 2.0 framework, the rights of the ASPNET user had not been set correctly.

Solution:
Repair (Uninstall if repair does not work for you) .NET Framework 2.0

Simply run the following from command line to reset the IIS registry settings for aspnet user. Usually framework directory for .Net Framework 2.0 resides under C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727>aspnet_regiis -i

JavaScript Trim, LTrim, RTrim Functions using Regular Expressions

2009-07-28T05:08:00.000-07:00

function jsTrim(stringToTrim)
{
return stringToTrim.replace(/^\s+\s+$/g,"");
}

function jsLtrim(stringToTrim)
{
return stringToTrim.replace(/^\s+/,"");
}

function jsRtrim(stringToTrim)
{
return stringToTrim.replace(/\s+$/,"");
}

Usage:
alert(jsTrim("     Webpage Tips     "));
alert(jsLtrim("     Webpage Tips"));
alert(jsRtrim("Webpage Tips     "));

HTML vs XHTML

2009-07-13T22:34:00.000-07:00

This specification defines an abstract language for describing documents and applications, and some APIs for interacting with in-memory representations of resources that use this language.

The in-memory representation is known as "DOM5 HTML", or "the DOM" for short.

There are various concrete syntaxes that can be used to transmit resources that use this abstract language, two of which are defined in this specification.

The first such concrete syntax is "HTML5". This is the format recommended for most authors. It is compatible with all legacy Web browsers. If a document is transmitted with the MIME type text/html, then it will be processed as an "HTML5" document by Web browsers.

The second concrete syntax uses XML, and is known as "XHTML5". When a document is transmitted with an XML MIME type (page 29), such as application/xhtml+xml, then it is processed by an XML processor by Web browsers, and treated as an "XHTML5" document. Authors are reminded that the processing for XML and HTML differs; in particular, even minor syntax errors will prevent an XML document from being rendered fully, whereas they would be ignored in the "HTML5" syntax.

The "DOM5 HTML", "HTML5", and "XHTML5" representations cannot all represent the same content. For example, namespaces cannot be represented using "HTML5", but they are supported in "DOM5 HTML" and "XHTML5". Similarly, documents that use the noscript feature can be represented using "HTML5", but cannot be represented with "XHTML5" and "DOM5 HTML". Comments that contain the string "-->" can be represented in "DOM5 HTML" but not in "HTML5" and "XHTML5". And so forth.

CSS Rounded Buttons

2009-07-10T04:30:00.000-07:00

This technique is simple and effective way to have buttons with nice rounded edges using plain CSS without any Javascript usage.

This method was tested on these common browsers:

Internet Explorer
Mozilla Firefox
Opera
Safary
Google Chrome

CSS Code:

.button {
 cursor: pointer;
 display: -moz-inline-box;
 display: inline-block;
 padding-left: 5px;
 padding-bottom: 1px;
 line-height: 19px;
 background-position: lef top;
 background-repeat: no-repeat;
 background-image: url(btn-left.gif);

}

.button span {
 padding-left: 10px;
 display: -moz-inline-box;
 display: inline-block;
 padding-right: 15px;
 padding-bottom: 1px;
 line-height: 19px;
 background-position: right top;
 background-repeat: no-repeat;
 background-image: url(btn-right.gif);
}

<a class="button" href="http://about-jsharp.blogspot.com/"><span>Button1</span></a>

Click here to download sample code with images

How to calculate download Speed using C#.net and Java Script code

2009-07-08T01:37:00.000-07:00

Using C#.Net code

private void CalculateDownloadTime(double fileSizeMB,double fileSizeKB,int speed,ref int timeHour,ref int timeMinute,ref int timeSec)
{
double downloadTime = 0;

if (fileSizeMB != 0)
{
downloadTime = (fileSizeMB * Constant.FILE_SIZE_KB * 8.192) / speed;
}
else if (fileSizeKB != 0)
{
downloadTime = (fileSizeMB * 8.192) / speed;
}

timeHour = Convert.ToInt32(downloadTime) / 3600;
timeMinute = (Convert.ToInt32(downloadTime) % 3600) / 60;
timeSec = Convert.ToInt32(downloadTime) % 60;
}

Example to call above function:

int timeHour =0;
int timeMinute =0;
int timeMinute =0;
CalculateDownloadTime(30,0,56, ref timeHour, ref timeMinute, ref timeMinute);

Using Java Script

<script type="text/javascript">
var speeds = new Array(
 new Array("9.6 Modem", "9.6"),
 new Array("14.4 Modem", "14.4"),
 new Array("19.2 Modem", "19.2"),
 new Array("28.8 Modem", "28.8"),
 new Array("33.6 Modem", "33.6"),
 new Array("56 Kb Modem", "56"),
 new Array("Single Channel ISDN (64Kbps)", "64"),
 new Array("Dual Channel ISDN (128Kbps)", "128"),
 new Array("Asymmetric DSL (ADSL)", "384"),
 new Array("Single-pair HDSL (S-HDSL)", "768"),
 new Array("Consumer DSL (CDSL)", "1024"),
 new Array("T1", "1544"),
 new Array("HDSL", "1544"),
 new Array("T3", "46080"),
 new Array("Very high-speed DSL (VDSL)", "52224"),
 new Array("OC1", "53248"),
 new Array("100 Base-T (fast ethernet)", "102400"),
 new Array("ATM", "158720"),
 new Array("OC3", "159744"),
 new Array("1000 Base-T", "1024000")
);

function compute (form, scale)
{
 if (form.size == null form.size.length == 0)
 {
  alert("Please enter a valid filesize.");
  return;
 }

 var size = parseFloat(form.size.value);
 for (var i = 1; i <= speeds.length; i++)
 {
  var time = size * scale * 8.192 / speeds[i - 1][1];
  var hours = Math.floor(time / 3600);
  var minutes = Math.floor((time % 3600) / 60);
  var seconds = Math.floor(time % 60);
  form[i + "hour"].value = hours;
  form[i + "minute"].value = minutes;
  form[i + "second"].value = seconds;
 }
 
}
</script>

Example to call above (compute) function:

For file Size MB --> compute(30,1024)
For file size KB --> compute(30,1)

How to move web page division on mouse scroll

2009-07-06T07:02:00.000-07:00

How to move web page division on mouse scroll (up/down)

Following code is an example to move left side portion of the web page on mouse scroll.

The division which you are going to move should be placed before java script; this code can implement in Java or .Net application, this java script function is compatible with Netscape, Mozilla and IE browsers.

Note: This code will activate only when you have horizontal scroll bar in your web page.

//Sample division to move
<div id="divTopLeft" style="position:absolute;left:10;top:200;width:167;">
<table border="1" width="159" height="550" bgcolor=Pink bordercolor="black" cellspacing="0" cellpadding="0">
<tr>
<td bordercolor="Pink">
<font color="blue">Your text should go here..</font>
</td>
</tr>
</table>
</div>
//Java script function to move above division up and down
<script type="text/javascript">
function FloatTopLeft()
{
//Set the start X and Y position for division
var startX = 622, startY = 220;
var ns = (navigator.appName.indexOf("Netscape") != -1);
var d = document;
var px = document.layers ? "" : "px";
function ml(id)
{
var el=d.getElementById?d.getElementById(id):d.all
?d.all[id]:d.layers[id];
if(d.layers)el.style=el
el.sP=function(x,y)
{
this.style.left=x+px;this.style.top=y+px;};
el.x = startX; el.y = startY;
return el;
}
window.stayTopLeft=function()
{
var pY = ns ? pageYOffset : document.documentElement && document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop;
var dY = (pY > startY) ? pY : startY;
ftlObj.y += (dY - ftlObj.y)/8 + 1;
ftlObj.sP(ftlObj.x, ftlObj.y);
setTimeout("stayTopLeft()", 20);
}
ftlObj = ml("divTopLeft");
stayTopLeft();
}
FloatTopLeft();
</script>

How to Lock the DeskTop in different Way ( Something New)

2009-07-06T06:59:00.000-07:00

This is a interesting piece of info that you can use to lock your work-stations without using the combo key "CTRL- ALT- DEL"

If CTRL-ALT-DELETE seems like too much of a hassle, try this instead:

Right click an empty spot on the desktop, point to New and click Shortcut.

In the Create Shortcut dialog box, type the following into the Type the location of the item text box: "rundll32 user32.dll,LockWorkStation" // remove quotes while typing

Click Next.

In the Select a Title for the Program dialog box, type "Lock Desktop" in
the Type a name for this shortcut text box.

Click Finish.

Retrieving the COM class factory ......failed due to the following error: 80040154.

2009-07-06T06:57:00.000-07:00

Retrieving the COM class factory for component with CLSID .....failed due to the following error: 80040154.

This error occuer when you reference unregistered DLL in your solution

Solution: Register your dll using regsvr32.exe utility then add the reference again.

>>> regsvr32 Mydll.dll /u --For unregister
>>> regsvr32 Mydll.dll --For register

How do i find out which dll it is that CLSID {0006F03A-0000-0000-C000-000000000046} refers to ??

to find the dll from CLSID go to the Registry Eidtor.(Run regedit)

In Registry Eidtor on left pan u will get details of all CLSID under:-->

My Computer --> HKEY_LOCAL_MACHIN --> SOFTWARE --> Classes --> CLSID

Domain Validation

2009-07-06T06:53:00.000-07:00

After sending a mail we need to validate for domain as well as account whether "To" or "From" mail id and domain are valid or not, it can be validate from .NET code using System.Net.Sockets.

Note: Use of sockets requires a trust level above the default "Medium".

Namespace
using System.Net;
using System.Net.Sockets;

C# Code

string email = "recipient@domain.com";

string[] host = email.Split('@');

string hostName = host[1];

Socket socket;

try

{

IPHostEntry entry = Dns.GetHostEntry(hostName);

IPEndPoint endPoint = new IPEndPoint(entry.AddressList[0], 25);

socket = new Socket(endPoint.AddressFamily, SocketType.Stream,

ProtocolType.Tcp);

socket.Connect(endPoint);

}

catch (SocketException ex)

{

// Invalid email.

}

IE Developer Toolbar Troubleshooting

2009-07-03T04:42:00.000-07:00

The Internet Explorer Developer Toolbar provides several features for exploring and understanding Web pages. These features enable you to:

Explore and modify the document object model (DOM) of a Web page.

Locate and select specific elements on a Web page through a variety of techniques.

Selectively disable Internet Explorer settings.

View HTML object class names, ID's, and details such as link paths, tab index values, and access keys.

Outline tables, table cells, images, or selected tags.

Validate HTML, CSS, WAI, and RSS web feed links.

Display image dimensions, file sizes, path information, and alternate (ALT) text.

Immediately resize the browser window to a new resolution.

Selectively clear the browser cache and saved cookies. Choose from all objects or those associated with a given domain.

Display a fully featured design ruler to help accurately align and measure objects on your pages.

Find the style rules used to set specific style values on an element.

View the formatted and syntax colored source of HTML and CSS.

Some times it’s not work properly.
To work properly we have to do following steps

Tools --> Internet options --> Security Tab --> Local Intranet --> Custom Level --> Run ActiveX Control or PlugIn (Administrator Mode)

Tools --> Internet Options --> Programs --> Manage add-ons --> IE Developer Toolbar BHO --> Enable

Tools --> Internet Options --> Advanced --> Enable third party browser-extensions (requires restart)

Converting HTML to XHTML - ASP.Net

2009-06-30T01:23:00.000-07:00

Sometimes we are in a situation that we want to convert HTML to XHTML format. You can easily achieve this using the HTML2XHTML.dll library created by Microsoft.

You can download the library at: Click here to download

Next you need to register the library. Just go to the Visual Studio.NET command prompt and go to the folder which contains the HTML2XHTMLLib.dll file and type:

<Drive>:\The path to the folder which contains the dll\regsvr32.exe HTML2XHTMLLib.dll

Now you can use can reference the library in our application using the Add Reference feature.

The following code reads the html file and converts it into the XHTML file and save it with the different name:


public void UsingHTMLTOXHTMLConverter(string html)
{
FileStream fs = null;
StreamWriter sw = null;

XHTMLUtilities xhtmlUtil = new XHTMLUtilities();
string xhtml = xhtmlUtil.convertToXHTML(html);

Label1.Text = Server.HtmlEncode(xhtml);

try
{
// write a new html file which contains the xhtml code

fs = File.Create(Server.MapPath("TestingResult.html"));
sw = new StreamWriter(fs);
sw.WriteLine(xhtml);

}
catch (Exception ex)
{

}
finally
{
// close the filestream and close the writer
sw.Close();
fs.Close();

}

}