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Adjust image brightness/contrast

Hello friends,

I am trying to adjust image brightness/contrast in HTML page using canvas tag. But i couldn't do it. Anybody send me full javascript coding using canvas tag to adjust brightness/contrast of an image.


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Sorry dude, you can get it from net right, i found it in a website, just search.


Posted on Sep 06, 2008

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How do I get one color of an image to go transparent in HTML Programming. I am going through the web page version of powerpoint document trying to find out how the transparent pen tool works and I'm...

you can use a css term opacity it will mahe your image transparent upto the extent you required <img src="imagename.jpg" width="150" height="100" alt="txt"

style="opacity:0.4;filter:alpha(opacity=40)" />

Nov 24, 2010 | Computers & Internet

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Which tags are use to adjust image in css as it remains same even we have to make small or big or whatever?

Its very simple. You have to use width and height attribute of <img> tag to adjust the image size in css.
for example
img.b46860 {/* scalable em size class 468px/60px banners */ width: 29.25em; /* replaces 468px width */ height: 3.8em; /* replaces 60px height */ }
Regards, polysandy

Jun 07, 2010 | Computers & Internet

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How do i permanently change font type and size to be default when writing email inaol desktop?

If you want to change the default HTML font size for outgoing e-mails:
  1. Right click on the Desktop > Properties > Appearance.
  2. Select "Message Box" in the Item drop down box > change the font.
If you want to change the default HTML font size for incoming e-mails (Using IE 5.5):
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Jul 23, 2009 | Computers & Internet

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Either your internet connection is slow or your account has been hacked..try the forget password option under login ...and give your details to get your new password

Jun 07, 2009 | Computers & Internet

1 Answer

How link to a new web page through clicking a

Here's a generic hyperlink, but I'm not sure that's what you're after:

<a href="http://www.address-of-target-page.html">Click this link</a>.

If it must be a button then use the img src tag in place of the link text, thus (I just found this by googling HTML image link code):

<a href="">
<img src="" width="200" height="261" border="2" alt="Photo of a big bunny rabbit!" /></a>

FYI "a" is short for Anchor and all you're doing with a link is clicking on an anchor; the anchor itself can be text or image. Don't forget to close the anchor tag with its </a> or it won't do anything. Also "href" is short for hypertext reference, also called a URL (Uniform Resource Locator) or URI (... Indicator).

Note: a best practice in HTML: use all lowercase code; type carefully and remember that in Unix/Linux (the majority of web servers) a in a web address is different from A. Finally, "img src" is short for "image source location".

When you say link to a "new" web page, perhaps you should look into Edit the text in red and add a fifteen-character string as follows: `target="_blank"` (not including the two back-tick "`" charcters; the code between them) at the end of the first tag (just before the ">" character, with a preceding space character so it doesn't run into the URL closing quote character) in your link code. If I didn't answer your question at the outset of this solution, then the target option may give you the results you need. In most browsers, that has the same effect as running a script that opens a new document in the browser.

Apr 13, 2009 | Matterform Media HTML Grinder (MTF0001G1)...

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Robohelp X5 Browser Output Issues

I had the same problem. Within the same page, some images showed up and some did not. I checked the HTML code and found the [IF vml] statement surrounding the missing images (see below):

<![if !vml]> <img src="Managing_Queues_v2_files/image120.jpg"
alt="" width="61" height="31"
border="0" /> <![endif]>

I deleted tags:<![if !vml]> (surrounding the image tags) <![endif]>
....and the images were fine. I had to do a search and replace to delete all such tags within the document.

I am not a programmer and not sure what else to do, but if anyone finds a faster solution or an option during the import of the word document, please share.

Hope this helps as a quick-fix for now.

Uka Pereira

Feb 17, 2009 | Macromedia RoboHelp X5 Office Pro for .NET...

1 Answer


about the dynamic forms/pages, u can use sessions in C#, theyre very easy to use and try using commands like server.transfer and respond.redirect in ur code. for the connectivity thigee u asked, :) m sorry my friend u cant get it like a pan cake, u gotta study w3schools odbc connectivity in tag for this :P

Dec 21, 2008 | Microsoft ASP NET WEB MATRIX (583797)

3 Answers

PHP Tags

if you want to be experienced with php programming language i think you should learn HTML and CSS and have some basic understanding about JAVASCRIPT , then you can start learning php.
the best website to learn php language is w3schools .

Good luck,

please don't forget to rate this post

Sep 07, 2008 | The PHP Group PHP

1 Answer

RoboHelp HTML -- cannot check out image

By "check out" image, what do you mean? If you mean it does not display, filenames are case sensitive, so make sure the HTML code correctly calls the .gif file with the right case.

Aug 09, 2007 | Macromedia RoboHelp Office X5

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