// Stylsheet

function setActiveStyleSheet(type, title) {
	//alert('setActiveStyleSheet');
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
	  if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
		  if(type == a.getAttribute("title").substring(0, type.length)) {
			  a.disabled = true;
			  if(a.getAttribute("title") == title) a.disabled = false;
		  }
    }
  }
}

function getActiveStyleSheet(type) {
	//alert('getActiveStyleSheet');
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
	  if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled)
	  	if(type == a.getAttribute("title").substring(0, type.length)) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet(type) {
	//alert('getPreferredStyleSheet');
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")) 
    	if (type == a.getAttribute("title").substring(0, type.length)) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
	//alert('createCookie');
  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 readCookie(name) {
	//alert('readCookie');
  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;
}

window.onload = function(e) {
  var cookie = readCookie("font");
  var title = cookie ? cookie : getPreferredStyleSheet("font");
  setActiveStyleSheet("font", title);

  cookie = readCookie("color");
  title = cookie ? cookie : getPreferredStyleSheet("color");
  setActiveStyleSheet("color", title);
  
  if (typeof start == 'function') {
		start();
	}
  //start();
}

window.onunload = function(e) {
  var title = getActiveStyleSheet("font");
  createCookie("font", title );
  title = getActiveStyleSheet("color");
  createCookie("color", title );
}

var cookie = readCookie("font");
var title = cookie ? cookie : getPreferredStyleSheet("font");
setActiveStyleSheet("font", title);

cookie = readCookie("color");
title = cookie ? cookie : getPreferredStyleSheet("color");
setActiveStyleSheet("color", title);