// JavaScript Document

	function getStyle (el,styleProp) {
		var x = document.getElementById(el);
		if (x.currentStyle)
			var y = x.currentStyle[styleProp];
		else if (window.getComputedStyle)
			var y = document.defaultView.getComputedStyle(x,null).getPropertyValue(styleProp);
		return y;
	}
	function roundIt () {
		if (!document.getElementsByTagName){
			return;
		}
		var divs = document.getElementsByTagName("div");
		for (var i=0; i<divs.length; i++){
			var div = divs[i];
			
			if (div.getAttribute("rounded")) {
				var prefix = div.getAttribute("rounded");
				var guts = div.innerHTML;
				var sty = div.style;
												
				div.innerHTML = '<img src="images/'+prefix+'-left.jpg" style="position:absolute;top:0px;left:0px;" />' + guts + '<img src="images/'+prefix+'-right.jpg" style="position:absolute;top:0px;right:-1px;" />';				
			}
		}
	}
	function showSub (id) {
		target = document.getElementById(id);
		if (target.style.display == "none") {
			target.style.display = "block";
		} else {
			target.style.display = "none";
		}
		return false;
	}
	
	
// Stylesheet Switcher
	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);