// rollover
function over() {
	if (!document.getElementById) return
	var aPreLoad = new Array();
	var aPreLoad2 = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');	
	var aImages2 = document.getElementsByTagName('input');
	
	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'over') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_on'+ftype);
			aImages[i].setAttribute('hsrc', hsrc);
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_on'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
	for (var i = 0; i < aImages2.length; i++) {		
		if (aImages2[i].className == 'over') {
			var src = aImages2[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_on'+ftype);
			aImages2[i].setAttribute('hsrc', hsrc);
			aPreLoad2[i] = new Image();
			aPreLoad2[i].src = hsrc;
			aImages2[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}
			aImages2[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_on'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

window.onload = over;


// backToTop
pageTop = {
	topFlag : "#top"
}

function toTop(){
	var a = document.getElementsByTagName("a");
	for(i=0;i<a .length;i++){
		if(new RegExp(pageTop.topFlag + "\\b").exec(a[i].getAttribute("href"))) {
			
			a[i].onclick = function(){
				this.removeAttribute("href")
				backToTop();
				this.setAttribute("href",pageTop.topFlag);
				return false;
			}
		}
	}
}


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 / 1.3), Math.floor(y / 1.3));

	if (x > 0 || y > 0) {
		window.setTimeout("backToTop()", 25);
	}
	else if (navigator.userAgent.indexOf("AppleWebKit") == -1){
		location.href = pageTop.topFlag;
	}
		
}

addEvent(window, 'load', toTop);

function addEvent(obj, evType, fn){
	if (obj.addEventListener){
		obj.addEventListener(evType, fn, false);
		return true;
	}
	else if (obj.attachEvent){
		var r = obj.attachEvent("on"+evType, fn);
		return r;
	}
	else {
		return false;
	}
}