Dynamic CSS

gistfile1.js

var style, css;
if (document.createStyleSheet){ // IE
	style = document.createStyleSheet();
	css = function(s){
		style.cssText = s;
	}
} else {
	style = document.createElement('style');
	document.getElementsByTagName('head')[0].appendChild(style);
	css = function(s){
		style.textContent = s;
	}
}
/*
    var s = +new Date;
    css('*{color:red;}');
    var t = new Date - s;
*/