function getCookie(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;
}

function changeBG()
{
	if (cur >= backgs.length-1) cur = 0
	else cur += 1
	document.body.style.background = backgs[cur][1] + " url(" + backgs[cur][0] + ") no-repeat top center";
	
	
	var date = new Date();
	date.setTime(date.getTime()+(365*24*60*60*1000));
	document.cookie = "mascot_bg="+cur+"; expires="+date.toGMTString()+"; path=/";
}



function onloadfunction()
{
	cur = parseInt(getCookie("mascot_bg"))
	if (isNaN(cur)) cur = 0
	document.body.style.background = backgs[cur][1] + " url(" + backgs[cur][0] + ") no-repeat top center";
}

if (typeof window.addEventListener != "undefined")
	window.addEventListener( "load", onloadfunction, false );
else if (typeof window.attachEvent != "undefined" )
	window.attachEvent( "onload", onloadfunction );
else
{
	if (window.onload != null)
	{
		var oldOnload = window.onload;
		window.onload = function(e)
		{
			oldOnload(e);
			onloadfunction();
		};
	}
	else
		window.onload = onloadfunction;
}