// JavaScript Document
sfHover = function() {
		var sfEls = document.getElementById("mainnav").getElementsByTagName("LI");	
	
		for (var i=0; i<sfEls.length; i++) {
			sfEls[i].onmouseover=function() {
				str = this.className;
				num = str.search(/drop/) // search for string "drop" indicating a dropdown menu
				if (num > 0) {
					this.className+=" sfhover";
				}	
				
			}
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			}
		}
	}
if (window.attachEvent) window.attachEvent("onload", sfHover)