window.addEvent('domready', function(){
	//rollover images
	var imgs = $$('.rollover');
	imgs.each(function(item, index){
		var els = item.getElements('img');
		if(els.length>1){
			item.addEvent('mouseover',function(){
				els[0].setStyle('display','none');
				els[1].setStyle('display','inline');
			});
			item.addEvent('mouseout',function(){
				els[1].setStyle('display','none');
				els[0].setStyle('display','inline');
			});
		}
	});
})
function ajaxrequest(arg,el){
	var myRequest = new Request({
		method: 'get',
		url: '',
		onSuccess: function(txt){
			$(el).set('html', txt);
		}
	});
	myRequest.send(arg);
}