Load any number of CSS files to the current document's head.

loadStyles.js

//Loads CSS files into the head of the current document
//using arguments to reference any number of styles
function loadStyles(){
	var i = 0,
		d = document,
		s = d.createElement("link"),
		h = d.getElementsByTagName('head')[0],
		createStyle = function(src){
			s = s.cloneNode(false);
			s.rel ="stylesheet";
			s.type = "text/css";
			s.href = src;
			h.appendChild(s);
		}
		
		for (i; i < arguments.length; i++){
			createStyle(arguments[i])
		}
}