RP={
	init: function(){
		$$(".over_out").each(function(el, x) {
    	el.addEvent("mouseover", RP.over);
    	el.addEvent("mouseout", RP.out);
    });
	},
	over: function(){
		 this.src = "img/"+this.id+"color.jpg";
	},
	out: function(){
		this.src = "img/"+this.id+".jpg";
	}
};
window.addEvent('domready', function() {
  RP.init();  
});