function get_cookie(name)
{
	with(document.cookie)
	{
		var index=indexOf(name+"=");
		if(index==-1) return '';
		index=indexOf("=",index)+1;
		var endstr=indexOf(";",index);
		if(endstr==-1) endstr=length;
		return unescape(substring(index,endstr));
	}
};

function set_cookie(name,value,days)
{
	if(days)
	{
		var date=new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires="; expires="+date.toGMTString();
	}
	else expires="";
	document.cookie=name+"="+value+expires+"; path=/";
}


function set_stylesheet(styletitle)
{
	var links=document.getElementsByTagName("link");
	var found=false;
	for(var i=0;i<links.length;i++)
	{
		var rel=links[i].getAttribute("rel");
		var title=links[i].getAttribute("title");
		if(rel.indexOf("style")!=-1&&title)
		{
			links[i].disabled=true; // IE needs this to work. IE needs to die.
			if(styletitle==title) { links[i].disabled=false; found=true; }
		}
	}
	if(!found) set_preferred_stylesheet();
}

function set_preferred_stylesheet()
{
	var links=document.getElementsByTagName("link");
	for(var i=0;i<links.length;i++)
	{
		var rel=links[i].getAttribute("rel");
		var title=links[i].getAttribute("title");
		if(rel.indexOf("style")!=-1&&title) links[i].disabled=(rel.indexOf("alt")!=-1);
	}
}

function get_active_stylesheet()
{
	var links=document.getElementsByTagName("link");
	for(var i=0;i<links.length;i++)
	{
		var rel=links[i].getAttribute("rel");
		var title=links[i].getAttribute("title");
		if(rel.indexOf("style")!=-1&&title&&!links[i].disabled) return title;
	}
}

function get_preferred_stylesheet()
{
	var links=document.getElementsByTagName("link");
	for(var i=0;i<links.length;i++)
	{
		var rel=links[i].getAttribute("rel");
		var title=links[i].getAttribute("title");
		if(rel.indexOf("style")!=-1&&rel.indexOf("alt")==-1&&title) return title;
	}
	return null;
}

window.onunload=function(e)
{
	if(style_cookie)
	{
		var title=get_active_stylesheet();
		set_cookie(style_cookie,title,365);
	}
}


if(style_cookie)
{
	var cookie=get_cookie(style_cookie);
	var title=cookie?cookie:get_preferred_stylesheet();
	set_stylesheet(title);
}