// JavaScript Document
//javascript moves through html where oversrc attribute is, and inserts onmouseover events

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);
  }
}


//this stops the image swap and sets the value of the hidden form input
var flag_last_selected = null;

function StopSwap(el){
	el.onmouseout = new Function();
	if(flag_last_selected != null){
		flag_last_selected.onmouseout = new Function("SimpleSwap(this);");
		flag_last_selected.src = flag_last_selected.getAttribute("origsrc");
	}	
	flag_last_selected = el;
	// this will change other values
	document.getElementById("applicable_download").value = el.getAttribute("value");
}