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

	if($.browser.msie && $.browser.version<7){
		$("img.rollover").each(function(){
			$(this)
			.data("src", $(this).attr("src"))
			.attr("src", "transparent.gif")
			.css("filter", "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+$(this).data("src")+"', sizingMethod='scale')");

		}).mouseover(function(){
			$(this).css("filter", "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+$(this).data("src").replace(/^(.+)(\.[a-z]+)$/, "$1_on$2")+"', sizingMethod='scale')");
		}).mouseout(function(){
			$(this).css("filter", "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+$(this).data("src")+"', sizingMethod='scale')");
		});

	}else{
		$("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"));
		});
	}
});