var aDOM = 0, ieDOM = 0, nsDOM = 0;
var stdDOM = document.getElementById;
if (stdDOM)
	aDOM = 1;
else {
	ieDOM = document.all;
	if (ieDOM)
		aDOM = 1;
	else {
		var nsDOM = ((navigator.appName.indexOf('Netscape') != -1) && (parseInt(navigator.appVersion) ==4));
		if (nsDOM) aDOM = 1;
	}
}

function findDOM(objectId, wS)
{
	if (stdDOM) return wS ? document.getElementById(objectId).style : document.getElementById(objectId);
	if (ieDOM) return wS ? document.all[objectId].style : document.all[objectId];
	if (nsDOM) return document.layers[objectId];
}

function findLivePageHeight()
{
	return window.innerHeight != null? window.innerHeight: document.body.clientHeight != null? document.body.clientHeight:null;
}

function findAdHeight(objectID)
{
	var obj = findDOM(objectID,0);
	if(obj.offsetHeight) return obj.offsetHeight;
	if (obj.clip) return obj.clip.height;
	return 180;
}
var right = 1;
var countdown = 10;
var slideDelay = 50;
var objStyle = null;

function slideAd(currentPos, finalPos, bottomBoundary)
{
	if(currentPos < finalPos) {
		speed = Math.ceil((finalPos - currentPos)/8);
		currentPos += speed;
		objStyle.top = currentPos;
		if (countdown > 0) {
			setTimeout('slideAd('+currentPos+','+finalPos+','+bottomBoundary+')',slideDelay);
		}
		if (countdown == 0) {
			objStyle.visibility = 'hidden';
		}
	}
}

function startAd(objectID)
{
	if (aDOM)
	{
		objStyle = findDOM(objectID, 1);
		var bottomBoundary = findLivePageHeight() - findAdHeight(objectID);
		bottomBoundary -= bottomBoundary % 2;
		slideAd(-164, 30, bottomBoundary);
	}
}

function displayAd(adText, cd)
{
	if(document.getElementById('mainAd').style.display == '') {
		document.getElementById('mainAd').style.display = 'none';
	} else {
		document.getElementById('mainAd').style.display = '';
		countdown = cd;
		startAd('mainAd');
	}
}

////////////////////////////////
var browserlevel = -1;

function getlevel() {
if (browserlevel != -1) return browserlevel;
    if(navigator.appName.indexOf("Netscape") != -1 || navigator.appName.indexOf("Mozilla") != -1){
        if (navigator.userAgent.indexOf("Mozilla/2.0") != -1) 
            browserlevel = 2;
        else
            if (navigator.userAgent.indexOf("Mozilla/3.0") != -1) 
                browserlevel = 3;
        else
                if (navigator.userAgent.indexOf("Mozilla/4.") != -1)
                    browserlevel = 4;
                else
                    if (navigator.userAgent.indexOf("Mozilla/5.") != -1)
                        browserlevel = 5;
                    else
                        browserlevel = 1;
        }  else {  
                if (navigator.appName.indexOf("Internet Explorer") != -1){
                     if (navigator.userAgent.indexOf("Mozilla/4.") != -1) 
                     		browserlevel = 4; 
                         else	
                            browserlevel = 1;
                     } else 
                     	browserlevel = 1;
               }
	if(browserlevel != 4) {
		document.getElementById('mainAd').style.top = '30px';
	}
}