PEPS = {};

PEPS.rollover = 
{
   init: function()
   {
      this.preload();
      
      $(".rollover").hover(
         function () { $(this).attr( 'src', PEPS.rollover.newimage($(this).attr('src')) ); }, 
         function () { $(this).attr( 'src', PEPS.rollover.oldimage($(this).attr('src')) ); }
      );
   },
   
   preload: function()
   {
      $(window).bind('load', function() {
         $('.rollover').each( function( key, elm ) { $('<img>').attr( 'src', PEPS.rollover.newimage( $(this).attr('src') ) ); });
      });
   },
   
   newimage: function( src )
   {
     // TODO: Fix the search method here as it does not full support all file extensions or query strings.
     return src.substring( 0, src.search(/(\.[a-z?0-9]+)$/) ) + '-roll' + src.match(/(\.[a-z?0-9]+)$/)[0]; 
   },
   
   oldimage: function( src )
   {
      return src.replace(/\-roll\./, '.'); 
   }
};