function readCookie(name)
{
	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;
}

function createCookie(name,value,days)
{
	var expires = '';
	if(days > 1)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	} else if(days == 1)
	{
		var date = new Date();
		var midnight = new Date(date.getFullYear(), date.getMonth(),
 date.getDate(), 23, 59, 59);
		var expires = "; expires=" + midnight.toGMTString();
	}
	document.cookie = name+"="+value+expires+"; path=/";	
}
 
function eraseCookie(name)
{
	createCookie(name,"",-1);	
}

function showPopunder(height,width,beginDate,expireDate,freq,fileName)
{
	if (height==undefined)
			height = 354;
	if (width==undefined)
			width = 504;
	if (beginDate==undefined)
			beginDate = "";
	if (expireDate==undefined)
			expireDate = "";
	if (freq==undefined)
			freq = 1;
	if (fileName==undefined)
			fileName = '/common/overlay/overlay_3.swf';
	var name = 'questback_popunder';
	if(expireDate != null && expireDate != ""){
		var today = new Date();
		var dateParts = expireDate.split("/");
		var lastDay = new Date(dateParts[2], (dateParts[1] - 1) ,dateParts[0]);
		if(today > lastDay)
			return;
	}
	if(beginDate != null && beginDate != ""){
		var today = new Date();
		var dateParts = beginDate.split("/");
		var bgDay = new Date(dateParts[2], (dateParts[1] - 1) ,dateParts[0]);
		if(today < bgDay)
			return;
	}
	if(readCookie(name))
		return;
	var popunder = window.open ('', '_blank', config='height='+height+', width='+width+', toolbar=no, menubar=no, scrollbars=no, resizable=no, location=no, directories=no, status=no');
	if(popunder==null)
		return;
	popunder.blur()
	window.focus();
	popunder.location.href = fileName;
	createCookie(name,"true",freq);
}