document.onmouseover = function ( e ) {   
	if ( !e ) e = window.event;   
	var el = e.target ? e.target : e.srcElement;   
	while ( el != null && el.tagName != "A" ) el = el.parentNode;   
	if ( el == null ) return;   
	if ( e.preventDefault ) e.preventDefault();   
	else e.returnValue = true;
};