function suckerfish(type, tag, parentId) {
	var sfEls = (parentId==null)?document.getElementsByTagName(tag):document.getElementById(parentId).getElementsByTagName(tag);
	type(sfEls);
}	

sfHover = function(sfEls) {
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=(this.className.length>0? " ": "") + "sfhover";			
		}
		// event added to keep menu items from disappearing
		sfEls[i].onmousedown=function() {
			this.className+=(this.className.length>0? " ": "") + "sfhover";
		}
		// event added to keep menu items from disappearing
		sfEls[i].onmouseup=function() {
			this.className+=(this.className.length>0? " ": "") + "sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), "");
		}
	}
}
window.onload = function() {
	suckerfish(sfHover, "li", "nav-main");
	suckerfish(sfHover, "li", "nav-list");
}