$(function(){
	$("img.png_rollover").each(function(){
		$("<img>").attr("src",$(this).attr("src").replace(/^(.+)(\.[a-z]+)$/, "$1_on$2"));
	})
	//
	if($.browser.msie && $.browser.version<7){
		$("img.png_img").each(function(){
			$(this)
			.data("src",$(this).attr("src"))
			.attr("src","img/top/spacer.gif")
			.css("filter","progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+$(this).data("src")+"',sizingMethod='scale')")
		})
		//
		$("img.png_rollover").each(function(){
			$(this)
			.data("src",$(this).attr("src"))
			.attr("src","img/top/spacer.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{
		$("img.png_rollover").mouseover(function(){
			//$(this).attr("src",$(this).attr("src").replace(/^(.+)(\.[a-z]+)$/, "$1_on$2"));
			$(this).animate({opacity:0.4},0.2*1000);
		}).mouseout(function(){
			//$(this).attr("src",$(this).attr("src").replace(/^(.+)_on(\.[a-z]+)$/, "$1$2"));
			$(this).animate({opacity:1.0},0.4*1000);
		})
	}
})