// http://alistapart.com/articles/hybrid/
setup_dropdowns();

function setup_dropdowns() {
	if (document.all && document.getElementById) {
		navRoot = document.getElementById("menu_inner");
		if(navRoot) {
			for (i=0; i<navRoot.childNodes[0].childNodes.length; i++) {
				node = navRoot.childNodes[0].childNodes[i];
				if (node.nodeName=="LI" && node.className=="unsel") {
					node.onmouseover=function() {this.className+=" over";}
					node.onmouseout=function() {this.className=this.className.replace(" over", "");}
				} else if (node.nodeName=="LI" && node.className=="sel") {
					node.onmouseover=function() {this.className+=" sel_over";}
					node.onmouseout=function() {this.className=this.className.replace(" sel_over", "");}
				}
			}
		}
	}
}

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;
}

el = window
if (typeof(el.onload) != "function") {
	el.onload = newOnload;
} else {
	var oldOnload2 = el.onload;
	el.onload = function() { oldOnload2(); newOnload(); }
}

function newOnload(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);