var bouncelimit=16; // must be divisible by 8

window.onload=initbox;
var ie=document.all;
var dom=document.getElementById;
var ns4=document.layers;
var calunits=document.layers? "" : "px";

function initbox()
{
	if (!dom&&!ie&&!ns4) return;
	cookie = readCookie("stop_press");

//	if (cookie == 1) return;
//	else createCookie("stop_press", "1");

	crossobj=(dom)?document.getElementById("dropin").style : ie ? document.all.dropin : document.dropin;
	scroll_top=(ie)? truebody().scrollTop : window.pageYOffset;
	crossobj.top=scroll_top-250+calunits;
	crossobj.visibility=(dom||ie)? "visible" : "show";
	dropstart=setInterval("dropin()",10);
}

function createCookie(name,value,hours)
{
	if (hours)
	{
		var date = new Date();
		date.setTime(date.getTime()+(hours*60*60));
		var expires = "; expires="+date.toGMTString();
	}
	else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

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 dropin()
{
	scroll_top=(ie)? truebody().scrollTop : window.pageYOffset;
	if (parseInt(crossobj.top)<100+scroll_top) crossobj.top=parseInt(crossobj.top)+10+calunits;
	else
	{
		clearInterval(dropstart);
		bouncestart=setInterval("bouncein()",10);
	}
}

function bouncein()
{
	crossobj.top=parseInt(crossobj.top)-bouncelimit+calunits;
	if (bouncelimit<0) bouncelimit+=8;
	bouncelimit=bouncelimit*-1;
	if (bouncelimit==0) clearInterval(bouncestart);
}

function dismissbox()
{
	if (window.bouncestart) clearInterval(bouncestart);
	crossobj.visibility="hidden";
}

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