(function(){
	var bgRoll = function(id,def,rol){
		var img = new Image(); img.src = rol;
		document.ready(function(){
			var o = document.getElementById(id);
			if(!o) return;
			document.addEvent(o,"mouseover",function(){ o.style.backgroundImage = "url("+rol+")";},false);
			document.addEvent(o,"mouseout",function(){ o.style.backgroundImage = "url("+def+")";},false);
			document.addEvent(o,"click",function(){ o.style.backgroundImage = "url("+def+")";},false);
		});
	}
	bgRoll("ca_inq","/images/catch_inq.png","/images/catch_inq_over.png");
	bgRoll("ca_calc","/images/catch_calc.png","/images/catch_calc_over.png");
	bgRoll("ca_vicio","/images/catch_vicious.png","/images/catch_vicious_over.png");
})();