/* ====================================================================
*		video ad script for Parool ©2011 Automo.tv
*		http://s3-eu-west-1.amazonaws.com/s3.automo.tv/parool/js/
*		(c)2011 guido@automo.tv - automo.tv / superherocheesecake.nl
* ==================================================================== */

var showTillDate = new Date("5/21/2011");
showTillDate.setDate(showTillDate.getDate()+1); //add one day to make sure it shows till end of the given day
//jquery method
//$(document).ready(checkForShow);


var checkTimer;
var checkCount = 0;
initVideoAd();

// ----------------- the functions --------------------


function initVideoAd()
{
	showTillDate.setDate(showTillDate.getDate()+1); //add one day to make sure it shows till end of the given day
	checkBodyLoaded();
}

function checkBodyLoaded() {
	var body = document.getElementsByTagName('BODY')[0];
	// CONDITION DOES NOT WORK
	if(body && body.readyState == 'loaded') {
	    checkForShow();
	} else {
	    // CODE BELOW WORKS
	    if (window.addEventListener) {  
	        window.addEventListener('load', checkForShow, false);
	    } else {
	        window.attachEvent('onload', checkForShow);
	    }
	}
}

function checkBodyLoadedOud() 
{
	//extra check if document.body really exists, even though we call this after window.onload
	if(document.body == null) {
		//alert("body is not loaded yet");
		checkCount++;
		checkTimer = setTimeout(checkBodyLoaded, 0);
	} else {
		//alert("body is loaded!! "+checkCount);
		checkForShow();
	}
}

function checkForShow()
{
	//alert("checkforshow!");
	var xPerWeek = 2;
	var minHoursBetween = 48;
	var xOnLastFewDays = 2;
	var lastTime = getCookieValue("timeStamp");
	var lastWeek = getCookieValue("weekNr");
	var timesWeek = getCookieValue("timesthisweek");
	var timesToday = getCookieValue("timestoday");
	var theShowGoesOn = testShow(lastTime, lastWeek, timesWeek, xPerWeek, minHoursBetween, timesToday, xOnLastFewDays);
	if(theShowGoesOn) {
		//alert("the Show Goes On!!");
		showAd();
	}
}

function showAd()
{
	var swffile = "http://s3-eu-west-1.amazonaws.com/s3.automo.tv/parool/js/videoad.swf";
	//create divs
	var divTag = document.createElement("div");
	divTag.id = "videoAdContainer";
	divTag.style.margin = "0px";
	divTag.style.left = "0";
	divTag.style.top = "0";
	divTag.style.position = "fixed";
	divTag.style.width = "100%";
	divTag.style.height = "100%";
	divTag.className ="dynamicDiv";
	document.body.appendChild(divTag);
	var divTag2 = document.createElement("div");
	divTag2.id = "videoAdFlash";
	divTag.appendChild(divTag2);
	//embed flash
	var flashvars = {};
	var params = {
		'allowfullscreen': 'true',
		'allowscriptaccess': 'always',
		'wmode': 'transparent'
	};
	var attributes = {
		'id': 'flashvideoad',
		'name': 'flashvideoad'
	};
	swfobject.embedSWF(swffile, "videoAdFlash", "100%", "100%", "9", 'false', flashvars, params, attributes);
	//hide div
	document.getElementById('videoAdContainer').style.visibility = 'hidden';
	
	//alert("the video should start playing any second now..");
}

function addLoadEvent(func)
{
	var oldonload = window.onload; 
	if (typeof window.onload != 'function') { 
		window.onload = func; 
	} else { 
		window.onload = function() {
			//alert("oldonload "+oldonload);
			if (oldonload) { 
				oldonload(); 
			} 
			func(); 
		} 
	} 
} 

function closeDiv()
{
	//called from swf, to close div
	var elm = document.getElementById('videoAdContainer');
	elm.parentNode.removeChild(elm);
	//alert('closeDiv!');
}

function showDiv()
{
	//alert('showdiv');
	document.getElementById('videoAdContainer').style.visibility = 'visible'; 
}


function registerShowed()
{
	//alert('registerShowed!');
	//register that video has been shown
	setCookieForaWeek("weekNr", Number(weekNumber()));
	setCookieForaWeek("timesthisweek", Number(getCookieValue("timesthisweek"))+1);
	setCookieForaDay("timestoday", Number(getCookieValue("timestoday"))+1);
	setCookieForaWeek("timeStamp", new Date().getTime());
}

function testShow(lastTime, lastWeek, timesWeek, xPerWeek, minHoursBetween, timesToday, xOnLastFewDays)
{
	// has flash?
	if (!swfobject.hasFlashPlayerVersion("9.0.18")) {
		//alert("you dont have flash");
		return false;
	}
	
	//if cookies dont work, always show
	if (!testPersistentCookie())
	{
		return true;
	}
	//if showdate has passed, dont show
	var currentDate = new Date();
	if(currentDate > showTillDate) {
		//alert("testshow "+timesToday+" "+xOnLastFewDays+" "+showTillDate+" "+currentDate);
		return false;
	}	
	//on last two days, show twice a day, but not within the hour
//	var showMoreOftenDate = new Date();
//	showMoreOftenDate.setDate(showMoreOftenDate.getDate()-2); //yesterday
//	if( currentDate >= showMoreOftenDate && timesToday<xOnLastFewDays && 4 < timeDiff(lastTime)) {
//		return true;
//	}
	//if first time this week
	var thisWeekNr = Number(weekNumber());
	if(thisWeekNr != lastWeek) {
		return true;
	}
	//if not too often and not within x hours
	if (timesWeek < xPerWeek && minHoursBetween < timeDiff(lastTime)){
		return true;
	}
	//alert("testshow "+timesToday+" "+xOnLastFewDays+" "+showTillDate+" "+currentDate);
	return false;
}

function timeDiff(lastTime){
	var now = new Date();
	var now = now.getTime();
	var diff = now - lastTime;
	return Math.round(diff/3600000);
}

///// cookies functions ////

function setCookieForaWeek (cName, cValue)
{  
	if (testPersistentCookie())
	{
		var myName = cName;
		var myValue = cValue;
		var myPeriod = "days";
		var myOffset = 7;
		writePersistentCookie (myName, myValue, myPeriod, myOffset);
	}
}
function setCookieForaDay (cName, cValue)
{  
	if (testPersistentCookie())
	{
		var myName = cName;
		var myValue = cValue;
		var myPeriod = "days";
		var myOffset = 1;
		writePersistentCookie (myName, myValue, myPeriod, myOffset);
	}
}


function writeSessionCookie (cookieName, cookieValue)
{
	if (testSessionCookie())
	{
		document.cookie = escape(cookieName) + "=" + escape(cookieValue) + "; path=/";
		return true;
	}
	return false;
}


function getCookieValue (cookieName)
{
	var exp = new RegExp (escape(cookieName) + "=([^;]+)");
	if (exp.test (document.cookie + ";"))
	{
		exp.exec (document.cookie + ";");
		return unescape(RegExp.$1);
	}
	return false;
}

function testSessionCookie ()
{
	document.cookie ="testSessionCookie=Enabled";
	if (getCookieValue ("testSessionCookie")=="Enabled")
	{
		return true 
	}
    return false;
}

function testPersistentCookie ()
{
	writePersistentCookie ("testPersistentCookie", "Enabled", "minutes", 1);
	if (getCookieValue ("testPersistentCookie")=="Enabled")
	{
		return true  
	}
    return false;
}

function writePersistentCookie (CookieName, CookieValue, periodType, offset)
{
	var expireDate = new Date ();
	offset = offset / 1;
  
	var myPeriodType = periodType;
	switch (myPeriodType.toLowerCase())
	{
		case "years": 
			var year = expireDate.getYear();     
			// Note some browsers give only the years since 1900, and some since 0.
			if (year < 1000) year = year + 1900;     
			expireDate.setYear(year + offset);
			break;
		case "months":
			expireDate.setMonth(expireDate.getMonth() + offset);
			break;
		case "days":
			expireDate.setDate(expireDate.getDate() + offset);
			break;
	    case "hours":
			expireDate.setHours(expireDate.getHours() + offset);
			break;
	    case "minutes":
			expireDate.setMinutes(expireDate.getMinutes() + offset);
			break;
	    default:
			//alert ("Invalid periodType parameter for writePersistentCookie()");
			break;
	} 
	document.cookie = escape(CookieName ) + "=" + escape(CookieValue) + "; expires=" + expireDate.toGMTString() + "; path=/";
}  

function deleteCookie (cookieName)
{
	if (getCookieValue (cookieName)) writePersistentCookie (cookieName,"Pending delete","years", -1);  
	return true;     
}


function weekNumber(terug)
{
	var vandaag = new Date();
	var jaartal = vandaag.getFullYear() - (terug ? 1 : 0);
	var nieuwjaarsdag = new Date(jaartal,0,1);
	var dagen = Math.floor((vandaag.getTime() - nieuwjaarsdag.getTime()) / (24 * 60 * 60 * 1000));
	var nen = [6,7,8,9,10,4,5][nieuwjaarsdag.getDay()];
	var nummer = Math.floor((dagen + nen) / 7);
	if (nummer == 0) {
		nummer = weekNumber(true); 
	}
	return nummer;
};



/*	SWFObject v2.2 <http://code.google.com/p/swfobject/> 
	is released under the MIT License <http://www.opensource.org/licenses/mit-license.php> 
*/
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