function changeClass(elementId, newClass){
 element = getElemRefs(elementId);
 element.className = newClass;
}
function getElemRefs(id) {
	var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? document.layers[id]: null;
	if (el) el.css = (el.style)? el.style: el;
	return el;
}