// MENU ROLLOVER

$(function(){
	$.each($("img.rollover"), function(){
		var imgPass = $(this).attr("src");
		var imgType = imgPass.substring(imgPass.lastIndexOf('.'), imgPass.length);
		var loadImgPass = imgPass.replace(imgType, '_over' + imgType);
		new Image().src = loadImgPass;
		$(this).attr({oversrc:loadImgPass});
	});
	$("img.rollover").hover(
		function(){
			$(this).attr({src:$(this).attr("oversrc")});
		},
		function(){
			$(this).attr({src:$(this).attr("src").replace("_over","")});
		}
	);
});


// GO TO PAGETOP
function backToTop() {
	var x1 = x2 = x3 = 0;
	var y1 = y2 = y3 = 0;
	if (document.documentElement) {
		x1 = document.documentElement.scrollLeft || 0;
		y1 = document.documentElement.scrollTop || 0;
	}
	if (document.body) {
		x2 = document.body.scrollLeft || 0;
		y2 = document.body.scrollTop || 0;
	}
	x3 = window.scrollX || 0;
	y3 = window.scrollY || 0;
	var x = Math.max(x1, Math.max(x2, x3));
	var y = Math.max(y1, Math.max(y2, y3));
	window.scrollTo(Math.floor(x / 1.2), Math.floor(y / 1.2));
	if (x > 0 || y > 0) {
		window.setTimeout("backToTop()", 10);
	}
}