/***********************************************
* Amazon style Drop-in content box- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit DynamicDrive.com for hundreds of DHTML scripts
* This notice must stay intact for legal use
* Go to http://www.dynamicdrive.com/ for full source code
***********************************************/

var popupWidth = 0;
var popupHeight = 0;

var dropspeed = 30; //set speed of drop animation (larger=faster)

//Specify display mode. 3 possible values are:
//1) "always" - This makes the fade-in box load each time the page is displayed
//2) "oncepersession"- This uses cookies to display the fade-in box only once per browser session
//3) integer (ie: 5)- Finally, you can specify an integer to display the box randomly via a frequency of 1/integer...
// For example, 2 would display the box about (1/2) 50% of the time the page loads.
var displaymode = "always";

var dropboxleft = (document.documentElement.clientWidth - popupWidth)/2;
var dropboxtop = (document.documentElement.clientHeight - popupHeight)/2;

if (parseInt(displaymode)!= NaN)
var random_num = Math.floor(Math.random()*displaymode);
var ie = document.all;
var dom = document.getElementById;

function initboxv2() {
	if (!dom&&!ie)
	return
	crossboxcover=(dom)?document.getElementById("adDivContainer") : document.all.adDivContainer;
	crossbox=(dom)?document.getElementById("adDivContent"): document.all.adDivContent;
	scroll_top=(ie)? truebody().scrollTop : window.pageYOffset;
	crossbox.height=crossbox.offsetHeight;
	crossboxcover.style.height=parseInt(crossbox.height)+"px";
	crossbox.style.top=crossbox.height*(-1)+"px";
	crossboxcover.style.left=dropboxleft+"px";
	crossboxcover.style.top=dropboxtop+"px";
	crossboxcover.style.visibility=(dom||ie)? "visible" : "show";
	dropstart=setInterval("dropinv2()",50);
}

function dropinv2(){
	scroll_top=(ie)? truebody().scrollTop : window.pageYOffset;
	if (parseInt(crossbox.style.top)<0)
	{
	crossboxcover.style.top=scroll_top+dropboxtop+"px";
	crossbox.style.top=parseInt(crossbox.style.top)+dropspeed+"px";
	}
	else {
	clearInterval(dropstart);
	crossbox.style.top=0;
	}
}

function closeAdDiv() {
	if (window.dropstart) 
	clearInterval(dropstart);
	crossboxcover.style.visibility="hidden";
}

function truebody() {
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}

function get_cookie(Name) {
	var search = Name + "=";
	var returnvalue = "";
	if (document.cookie.length > 0) 
	{
		offset = document.cookie.indexOf(search);
		if (offset != -1) 
		{
			offset += search.length;
			end = document.cookie.indexOf(";", offset);
			if (end == -1)
			end = document.cookie.length;
			returnvalue = unescape(document.cookie.substring(offset, end));
		}
	}
	return returnvalue;
}

if (displaymode=="oncepersession" && get_cookie("droppedinv2")=="" || displaymode=="always" || parseInt(displaymode)!=NaN && random_num==0)
{
	if (window.addEventListener)
		window.addEventListener("load", initboxv2, false);
	else if (window.attachEvent)
		window.attachEvent("onload", initboxv2);
	else if (document.getElementById || document.all)
		window.onload=initboxv2;
	if (displaymode=="oncepersession")
		document.cookie="droppedinv2=yes";
}