$(document).ready(function(){
	var number = Math.ceil(3*Math.random());
	switch(number){
		case 1:
			$(".right_page_home").css({'background' : 'url(img/orangecakehome.jpg) no-repeat'});							   
			break;
		case 2:
			$(".right_page_home").css({'background' : 'url(img/pastahome.jpg) no-repeat'});	
			break;
		case 3:
			$(".right_page_home").css({'background' : 'url(img/porkhome.jpg) no-repeat'});	
			break;
	}
});