//create onclick event handlers for tag in id and call function defined by funcOnClick
function prepareOnClick(id,tag,funcOnClick){
	if (!document.getElementsByTagName) return false;
	if (!document.getElementById) return false;
	if (!document.getElementById(id)) return false;
	var menuitems=document.getElementById(id);
	var links=menuitems.getElementsByTagName(tag);
	for (var i=0; i<links.length; i++){
		links[i].onclick=function(){
			funcOnClick(this);
			return false;
			}
		}
}