var swpImgs = new Array();
var orgImgs = new Array();

$(function()
{
	$(".swap").each(
		function()
		{
			var oldimg = $(this).attr("src");
			var newimg = oldimg.replace("_off", "_on");
			swpImgs[newimg] = new Image();
			swpImgs[newimg].src = newimg;
			orgImgs[oldimg] = new Image();
			orgImgs[oldimg].src = oldimg;
		}
	);
	
	$(".swap").hover(
		function()
		{
			var key = $(this).attr("src");
			key = key.replace("http://" + document.domain, "");
			key = key.replace("_off", "_on");
			if (swpImgs[key]) $(this).attr("src", swpImgs[key].src);
		},
		function()
		{
			var key = $(this).attr("src");
			key = key.replace("http://" + document.domain, "");
			key = key.replace("_on", "_off");
			if (orgImgs[key]) $(this).attr("src", orgImgs[key].src);
		}
	);
});