$(function() {
	
	$("#header img").each(function() {
		var imgsrc = $(this).attr("src").split("_");
		if (imgsrc[imgsrc.length-1] == "0.jpg")
		{
			$(this).mouseover(function() {
				isrc = $(this).attr("src");
				$(this).attr("src",isrc.replace(/0[.]jpg/,"1.jpg"));
				$(this).css("opacity",0.7);
			}).mouseout(function() {
				isrc = $(this).attr("src");
				$(this).attr("src",isrc.replace(/1[.]jpg/,"0.jpg"));
				$(this).css("opacity",1.0);
			});
		}
	});

});