//navigation rollover

$j = jQuery.noConflict();

SITE = {
	basepath : '/',
	preloader : {
		loadedImages: [],
		load: function (url){
			var img = this.loadedImages;
			var l = img.length;
			img[l] = new Image();
			img[l].src = url;
		}
	}
};

$j(function(){
	$j('img.roll').each(function(){
		this.originalSrc = $j(this).attr('src');
		this.rolloverSrc = this.originalSrc.replace(/(\.gif|\.jpg|\.png)/, "_over$1");
		SITE.preloader.load(this.rolloverSrc);
	});
	$j('img.roll').not($j('.rollgroup .roll, .current .roll')).hover(function(){
		$j(this).attr('src',this.rolloverSrc);
	},function(){
		$j(this).attr('src',this.originalSrc);
	});
});


//backToTopBTN

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 / 1.4), Math.floor(y / 1.4));
	if (x > 0 || y > 0) {
		window.setTimeout("backToTop()", 10);
	}
}