RE:Re: Proposal: version at-rule

This: 
#myDiv { 
 width: 100px; 
 padding: 20px; 

 if( calculated-width != 100px ) 
 width: 80px; 
} Is silly, no offense. First of all IE's Box Model makes far more sense than the W3C's in my opinion. Second there IS a CSS3 declaration that switches box models (box-sizing) which is supported by IE5 Mac and Opera 7 (Mozilla supports -moz-box-sizing). And finally and this is a typical Javascript job. calculated-width is a dead ringer to offsetWidth if (document.getElementById("myDiv").offsetWidth != 100) document.getElementById("myDiv").style.width="80px"; Bringing if statements into selectors would be a bad idea (though an at-rule would be better). What if we did this: You have a link tag for your advanced layout: <link rel="stylesheet" href="file.css" support="sup.txt" /> You could then have a seperate text file which would contain special syntax for support. If one criterium is not met, the link tag is disabled. Example text file: var attrs= new SupportCheck("*:attr[]"); if (attrs) return true; Looks like Javascript, but the browsers would have a native SupportCheck function that returns a boolean depending on whether the selector, declaration whatever is supported. I know it sounds silly but just think about it. 



Dante Evans (AKA Sean M. Hall) Freelance musician, historian, writer, web developer www.sfhe.cjb.net CEO of DCScript www.dcscript.vze.com 'Evans, Dante Evans'