function changeOn() {
	YAHOO.util.Dom.addClass(this,'button-rollover');	
}

function changeOff() {
	YAHOO.util.Dom.removeClass(this,'button-rollover');	
}

function setRollovers(){
	
	var elements = YAHOO.util.Dom.getElementsByClassName('has-rollover');
	
	//alert('found: ' + elements.length + ' elements');
	
	if (elements.length == 0) return;
	
	for (var i = 0; i < elements.length; i++){
		YAHOO.util.Event.addListener(elements[i],'mouseover',changeOn);
		YAHOO.util.Event.addListener(elements[i],'mouseout',changeOff);
	}
	 
}