/*
  If you have worked with JavaScript at any length you are aware that IE does not implement 
  the ECMAScript function for Array.prototype.indexOf() [including IE8]. Not a huge problem 
  because you can extend the functionality on your page with the following code.
*/
if (!Array.prototype.indexOf) {

  Array.prototype.indexOf = function(obj, start) {
     for (var i = (start || 0), j = this.length; i < j; i++) {
         if (this[i] === obj) { return i; }
     }
     return -1;
  }

}