//Style Sheet Switcher version 1.1 Oct 10th, 2006
//Author: Dynamic Drive: http://www.dynamicdrive.com
//Usage terms: http://www.dynamicdrive.com/notice.htm

var ttl = 1095000; // preferencje zapamietywane sa na 3000 lat (trzy tysiace lat)

var maxzoom = 2;

function advanceZoomText(n) {
  v = currzoom;
  if (n&&(v<maxzoom)) v++;
  if ((!n)&&(v>0)) v--;
  zoomText(v);
}

function switchZoomText() {
  v = currzoom + 1;
  if (v>maxzoom) v = 0;
  zoomText(v);
}

function zoomText(n) {
  var z = (n > 0 ? "csszoom."+n : "none");
  chooseStyle(z,ttl);
  currzoom = n;
}

var manual_or_random="manual"
var randomsetting="3 days"

//////No need to edit beyond here//////////////

function getCookie(Name) { 
var re=new RegExp(Name+"=[^;]+", "i");
if (document.cookie.match(re))
return document.cookie.match(re)[0].split("=")[1]
return null
}

function setCookie(name, value, days) {
var expireDate = new Date()
var expstring=(typeof days!="undefined")? expireDate.setDate(expireDate.getDate()+parseInt(days)) : expireDate.setDate(expireDate.getDate()-5)
document.cookie = name+"="+value+"; expires="+expireDate.toGMTString()+"; path=/";
}

function deleteCookie(name){
setCookie(name, "moot")
}


function setStylesheet(title, randomize){
var i, cacheobj, altsheets=[""]
for(i=0; (cacheobj=document.getElementsByTagName("link")[i]); i++) {
if(cacheobj.getAttribute("rel").toLowerCase()=="alternate stylesheet" && cacheobj.getAttribute("title")) {
cacheobj.disabled = true
altsheets.push(cacheobj)
if(cacheobj.getAttribute("title") == title)
cacheobj.disabled = false
}
}
if (typeof randomize!="undefined"){
var randomnumber=Math.floor(Math.random()*altsheets.length)
altsheets[randomnumber].disabled=false
}
return (typeof randomize!="undefined" && altsheets[randomnumber]!="")? altsheets[randomnumber].getAttribute("title") : ""
}

function chooseStyle(styletitle, days){
if (document.getElementById){
setStylesheet(styletitle)
setCookie("mysheet", styletitle, days)
}
}

function indicateSelected(element){
if (selectedtitle!=null && (element.type==undefined || element.type=="select-one")){
var element=(element.type=="select-one") ? element.options : element
for (var i=0; i<element.length; i++){
if (element[i].value==selectedtitle){
if (element[i].tagName=="OPTION")
element[i].selected=true
else
element[i].checked=true
break
}
}
}
}

if (manual_or_random=="manual"){
var selectedtitle=getCookie("mysheet")
  var currzoom=(((selectedtitle+".0").split("."))[1])*1;
if (document.getElementById && selectedtitle!=null)
setStylesheet(selectedtitle)
}
else if (manual_or_random=="random"){
if (randomsetting=="eachtime")
setStylesheet("", "random")
else if (randomsetting=="sessiononly"){
if (getCookie("mysheet_s")==null)
document.cookie="mysheet_s="+setStylesheet("", "random")+"; path=/"
else
setStylesheet(getCookie("mysheet_s"))
}
else if (randomsetting.search(/^[1-9]+ days/i)!=-1){
if (getCookie("mysheet_r")==null || parseInt(getCookie("mysheet_r_days"))!=parseInt(randomsetting)){
setCookie("mysheet_r", setStylesheet("", "random"), parseInt(randomsetting))
setCookie("mysheet_r_days", randomsetting, parseInt(randomsetting))
}
else
setStylesheet(getCookie("mysheet_r"))
} 
}