var canvas = document['CSS1Compat' == document.compatMode ? 'documentElement' : 'body'];
var scrollTimer;
var previousPosY;
var previousPosX;

var WinIE6	= navigator.appVersion.indexOf('MSIE 6', 0);
var WinIE7	= navigator.appVersion.indexOf('MSIE 7', 0);
var FFox	= navigator.userAgent.indexOf('Firefox', 0);
var Safari	= navigator.appVersion.indexOf('Safari', 0);
var Opera	= navigator.userAgent.indexOf('Opera', 0);

function movePageTop() {
	previousPosY = -1;
	previousPosX = -1;
	pageScroll();
}

function pageScroll() {
	if(WinIE6 != -1 || WinIE7 != -1 || FFox != -1 || Safari != -1 || Opera != -1) {
		var pageHeight;
		var currentPosY;
		var currentPosX;
		
		if(scrollTimer) {
			clearInterval(scrollTimer);
		}
		
		pageHeight = document.body.scrollHeight;
		
		if(canvas) {
			currentPosY = canvas.scrollTop;
			currentPosX = canvas.scrollTop;
		}
		else {
			currentPosY = document.body.scrollTop;
			currentPosX = document.body.scrollTop;
		}
		
		if(previousPosY != -1 && previousPosY != currentPosY) {
			return;
		}
		
		if(currentPosY > 0) {
			temp = Math.floor(currentPosY / 1.3);
			temp2 = Math.floor(currentPosX / 1.1);
			previousPosY = temp;
			previousPosX = temp2;
			window.scrollTo(temp2, temp);
			scrollTimer = setInterval("pageScroll()", 10);
		}
		
	}
	else {
		window.scrollTo(0, 0);
	}
}

function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'btn') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '-over'+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('-over'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

window.onload = initRollovers;

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}