//--rollover
//--prev + _on.jpg + class=rollover

$(function(){
	$("img.rollover").mouseover(function(){
		$(this).attr("src",$(this).attr("src")
				.replace(/^(.+)(\.[a-z]+)$/, "$1_on$2"));
}).mouseout(function(){
	$(this).attr("src",$(this).attr("src")
			.replace(/^(.+)_on(\.[a-z]+)$/, "$1$2"));
}).each(function(){
	$("<img>").attr("src",$(this).attr("src")
			.replace(/^(.+)(\.[a-z]+)$/, "$1_on$2"));
	});
});