function getElementsByClass(searchClass,node,tag) {
		var classElements = new Array();
		if ( node == null )
			node = document;
		if ( tag == null )
			tag = '*';
		var els = node.getElementsByTagName(tag);
		var elsLen = els.length;
		var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
		for (i = 0, j = 0; i < elsLen; i++) {
			if ( pattern.test(els[i].className) ) {
				classElements[j] = els[i];
				j++;
			}
		}
	return classElements;
}


function setupLinksForFading(){
	var navLinks = document.getElementById('nav').getElementsByTagName('li');
	
	
	for(aLink in navLinks){
		aLink.onmouseover = function () {
			this.className += ' over';
			alert('class name is ' + this.className);
		}
		
		aLink.onmouseout = function () {
			this.className = this.className.replace(' over','');
		}
	}
}

window.onload = function () {
	setupLinksForFading();
}