/***********************************************************
autor: Jan Dudek, jan_dudek@seznam.cz

funkce createCookie a readCookie vytvoril Peter-Paul Koch
http://www.quirksmode.org/
***********************************************************/

var BASE="#"	//retezec signalizujici, ze nema byt aktivovan zadny styl
var DAYS="10"	//platnost cookie se zvolenym stylem ve dnech

function createCookie(name,value,days)
{
if (days)
{
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else var 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 setStyle(title)
{
var i, p, links = new Array();
links=document.getElementsByTagName("link");
for (i=0; i<links.length; i++)
{
if ((links[i].getAttribute("rel").indexOf("stylesheet")!=-1) && (p=links[i].getAttribute("title")))
{
links[i].disabled=true;
if ((p==title) && (p!=BASE)) links[i].disabled=false;
}
}
}

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

window.onload=window.onclose=function()
{
var p;
if (p=readCookie("style"))
{
setStyle(p);
}
}

window.onunload=function()
{
createCookie("style",getStyle(),DAYS);
}