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Creating Dynamic Style Sheets Using ASP - IE 6

IE 6

It is important for me to note that in IE6 there will be one other piece of code that will affect how this style sheet is rendered. Because the padding change is such a radical one, Microsoft has decided that the new padding standard will only apply if you specify the use of one of the document type definitions (or DTDs) that comply with  HTML 4.01. The default will be Frameset if you don't specify one, so using this code without providing either a Loose or Strict DTD will cause your boxes to appear oddly in IE6. To correct this, either remove IE6 from the css2compatible test in BrowserDetect.asp, or provide the following line of code at the top of your web pages.

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" http://www.w3.org/TR/html4/loose.dtd>

That's about it. Simply include a link to the stylesheet in the HTML file and you'll have a style sheet that will customize itself to the browser of any specific user of the site.

<link rel="stylesheet" type="text/css" href="samplestyle.asp" />

Wasn't that easy? You can view the sample output by following the link below. Check it out in diffferent browsers to see the different results you'll get in them. You could even view the stylesheet itself at its URL to see the actual code produced when your browser loads the file.

For once I seem to have written something that doesn't require a great deal of elaboration. The concept is simple, and yet this concept has applications which can become very complex. For example, you could pass specific attributes to your style sheet using the Request.QueryString object, making it a one-stop style shop for your entire web site, while still being able to produce customized styles for various pages and parts of the site.
I should mention some of the benefits of doing things this way. Firstly, by putting the ASP in your style sheet, you can avoid having obnoxious and cumbersome code in your web application; normally you'd have to use CLASS or ID attribute name changes to accomplish the same cross-browser results we get here. Also, your style sheet will contain only the code that it needs at any one time, reducing the risk that your style commands will conflict with one another and produce unfavorable results.

I have been working in IT since 1993. I founded CarpeDiem Business Internet Systems in 1995. In 2000 we incroporated and took on two partners. Its really a grat lot of fun, and I enjoy working on the high-end and cutting-edge stuff from Microsoft. I'm pretty hard up for work lately, because of the attacks in New York and DC, so if anyone has any leads, they'd really help out a lot. Come check out our web site!

This article is Copyright (c) 2001 by Thomas Carpe and CarpeDiem Business Internet Systems, Inc. Published by permission. If you would like to publish articles by myself and our staff on this or other topics, please contact us.

Comments

  • browser detection

    Posted by bfregon on 15 Jan 2003

    There is also a very simple service one can use for browser detection. It's a service, so it's always up to date with the latest browsers. To take a peek, check out http://www.whatsthatbrowser.com