// This is the implementation of SimpleSwap
// by Jehiah Czebotar
// Version 1.1 - June 10, 2005
// Distributed under Creative Commons
//
// Include this script on your page
// then make image rollovers simple like:
// <img src="/images/ss_img.gif" oversrc="/images/ss_img_over.gif">
//
// http://jehiah.com/archive/simple-swap
// 


function SimpleSwap(el,which){
  el.src=el.getAttribute(which || "origsrc");
}

function SimpleSwapSetup(){
  var x = document.getElementsByTagName("img");
  for (var i=0;i<x.length;i++){
    var oversrc = x[i].getAttribute("oversrc");
    if (!oversrc) continue;
      
    // preload image
    // comment the next two lines to disable image pre-loading
    x[i].oversrc_img = new Image();
    x[i].oversrc_img.src=oversrc;
    // set event handlers
    x[i].onmouseover = new Function("SimpleSwap(this,'oversrc');");
    x[i].onmouseout = new Function("SimpleSwap(this);");
    // save original src
    x[i].setAttribute("origsrc",x[i].src);
  }
}

var PreSimpleSwapOnload =(window.onload)? window.onload : function(){};
//window.onload = function(){ SimpleSwapSetup();}
function clearAll(){
	if (document.getElementById('nav-fragment-1-image') != null){
		document.getElementById('nav-fragment-1-image').src = '/assets/images/tabScience.png';
		document.getElementById('nav-fragment-2-image').src = '/assets/images/tabEngineering.png';
		document.getElementById('nav-fragment-3-image').src = '/assets/images/tabGreen.png';
	}
}
function imageswap(imageid, imageurl, currentTab){
	clearAll()
	document.getElementById(imageid).src = imageurl;
	if (currentTab >= 0)
		jQuerytabs.tabs('select', currentTab); // switch to third tab
}