var CookieId;
var ZoomValue;
var CustName;

function ReadCurrentZoom(CustName)
{

	try {
		if(navigator.cookieEnabled==true)
		{
			if(readCookie(CustName))
			{
				ZoomValue = readCookie(CustName);
			}
			else
			{
				ZoomValue = "1";
			}

			//window.document.body.className="Scale" + ZoomValue;
			document.getElementById("Container").className="Scale" + ZoomValue;
			CookieId = CustName;
		}
	} catch(e) {
		alert(e);
	}
}

function Zoom(ZoomIncrement)
{
	try {

		if(navigator.cookieEnabled==true)
		{
			if((ZoomValue=="0" || ZoomValue=="1" || ZoomValue=="2") && ZoomIncrement=="+1")
			{
				ZoomValue=parseFloat(ZoomValue)+ZoomIncrement;

			}

			else if((ZoomValue=="1"|| ZoomValue=="2" || ZoomValue=="3") && ZoomIncrement=="-1")
			{
				ZoomValue=parseFloat(ZoomValue)+ZoomIncrement;
			}

			document.getElementById("Container").className="Scale" + ZoomValue;
			createCookie(CookieId,ZoomValue,7);
		}

	} catch(e) {
		alert(e);
	}
}


function createCookie(name,value,days)
{
	try {
		if (days)
		{
			var date = new Date();
			date.setTime(date.getTime()+(days*24*60*60*1000));
			var expires = "; expires="+date.toGMTString();
		}
		else var expires = "";
		document.cookie = name+"="+value+expires+"; path=/";
	} catch(e) {
		// error
	}
}

function readCookie(name)
{	try {
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++)
		{
			var c = ca[i];
			while (c.charAt(0)==' ') c = c.substring(1,c.length);
			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		}
		return null;
	} catch(e) {
		alert(e);
	}
}