/* ****************************************************** */
// The constructor should be called with
// the parent object (optional, defaults to window).

function Timer(){
    this.obj = (arguments.length)?arguments[0]:window;
    return this;
}

// The set functions should be called with:
// - The name of the object method (as a string) (required)
// - The millisecond delay (required)
// - Any number of extra arguments, which will all be
//   passed to the method when it is evaluated.

Timer.prototype.setInterval = function(func, msec){
    var i = Timer.getNew();
    var t = Timer.buildCall(this.obj, i, arguments);
    Timer.set[i].timer = window.setInterval(t,msec);
    return i;
}
Timer.prototype.setTimeout = function(func, msec){
    var i = Timer.getNew();
    Timer.buildCall(this.obj, i, arguments);
    Timer.set[i].timer = window.setTimeout("Timer.callOnce("+i+");",msec);
    return i;
}

// The clear functions should be called with
// the return value from the equivalent set function.

Timer.prototype.clearInterval = function(i){
    if(!Timer.set[i]) return;
    window.clearInterval(Timer.set[i].timer);
    Timer.set[i] = null;
}
Timer.prototype.clearTimeout = function(i){
    if(!Timer.set[i]) return;
    window.clearTimeout(Timer.set[i].timer);
    Timer.set[i] = null;
}

// Private data

Timer.set = new Array();
Timer.buildCall = function(obj, i, args){
    var t = "";
    Timer.set[i] = new Array();
    if(obj != window){
        Timer.set[i].obj = obj;
        t = "Timer.set["+i+"].obj.";
    }
    t += args[0]+"(";
    if(args.length > 2){
        Timer.set[i][0] = args[2];
        t += "Timer.set["+i+"][0]";
        for(var j=1; (j+2)<args.length; j++){
            Timer.set[i][j] = args[j+2];
            t += ", Timer.set["+i+"]["+j+"]";
    }}
    t += ");";
    Timer.set[i].call = t;
    return t;
}
Timer.callOnce = function(i){
    if(!Timer.set[i]) return;
    eval(Timer.set[i].call);
    Timer.set[i] = null;
}
Timer.getNew = function(){
    var i = 0;
    while(Timer.set[i]) i++;
    return i;
}

sfHover = function() {
var sfEls = document.getElementById("nav").getElementsByTagName("LI");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=" sfhover";
}
sfEls[i].onmouseout=function() {
this.timer = new Timer(this);
this.timer.setTimeout("out",500);
}
sfEls[i].out=function() {
this.className=this.className.replace(new RegExp("\\bsfhover\\b"), "");
}

}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);
if (window.addEventListener) window.addEventListener( "load", sfHover, false );

/* ****************************************************** */
function changeImages() {
for (var i=0; i<changeImages.arguments.length; i+=2) {
document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
}}

function imagepop(URL, width, height, handle) {
window.open(URL,handle,'width='+width+',height='+height+',status=no,scrollbars=no,resizable=yes,location=no,menubar=no,toolbar=no,directories=no');
}
function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function 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) return a.getAttribute("title");
  }
  return null;
}

function 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")
       ) return a.getAttribute("title");
  }
  return null;
}

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 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;
}

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

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

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