Event.observe( window, 'load', function(){
		var E = $$('a.tooltip') 
	$$('a.tooltip').each(function(E){
			var tip = E.readAttribute('title');			
			Event.observe(E,"mouseover",function(){
				E.insert('<div class="tooltip-balloon"><div class="tooltip-balloon-inner">'+tip+'</div></div>')	
				E.writeAttribute('title', '')
			});
			Event.observe(E,"mouseout",function(){
				if(E.childElements()[0] != undefined){
					E.childElements()[0].remove()
					E.writeAttribute('title', tip)
				}
			});
	});


});