// Bill Weinman's Generic Rollover Engine
// (c) 2000-2003 William E. Weinman
// 
// http://bw.org/
//
// This program is free software. You may modify and distribute it 
// as long as you include this notice in all copies. 
// 
// No other rights are granted. This program is not "public domain". 
//

okay = false;  // wait until variables are initialized

var preload = new Array (

  ///////////////////////////////////////////////////////////////////////
  // list all your images here. Remember: No comma after the last image!
  //

  "over_05.png",   "orginal_05.png",
  "over_03.png",   "orginal_03.png",
  "three-on.gif", "three-off.gif",
  "four-on.gif",  "four-off.gif",
  "five-on.gif",  "five-off.gif",

  "arrow.gif",

  "hand-one.gif", "hand-two.gif", 
  "hand-three.gif", "hand-four.gif", 
  "hand-five.gif", 

  "blank.gif"

  //
  // you shouldn't need to modify anything below this line
  ///////////////////////////////////////////////////////////////////////

  );

// find out what browser this is
with(navigator) {
  code = appCodeName; 
  app = appName; 
  version = appVersion; 
  iver = parseInt(version); 
  ua = userAgent;
  }

// this will work in "Mozilla" 3+ (includes MSIE 4)
if ( code == "Mozilla" && iver >= 3 )  okay = true;
else { okay = false; }

if(okay) {
  // compile the RegExp because we use it a lot
  var re = new RegExp();
  re.compile("[\\/.:\\-\\s]", "g");

  // preload the images
  for (var i = 0; i < preload.length; i++) {
    i_preload(preload[i]);
    }
  var preloaded = true
  }

// take a filename and make a legal variable name from it
function iname (img) 
{
var s = img.replace(re, "_");
return s;
}

// preload the images
function i_preload(img)
{
if(img) {
  var imgn = iname(img);
  eval(imgn + " = new Image()");
  eval(imgn + ".src = '" + img + "'");
  }
return true;
}

// swap entry function
function swap (name, image) 
{
if(!okay) return true; // just leave unless okay

// don't try to do this before the preloading is finished
if(preloaded) document.images[name].src = image;
return true;
}