$(document).ready(function() {
   $('.img_header').hover(
         function() {
            this.src = this.src.replace("_down_","_over_");
         }, 
         function() {
            this.src = this.src.replace("_over_", "_down_");
         }
   );

   $('.img_button').not('.active_button').hover(
         function() {this.src = this.src.replace("_down_", "_over_");},
         function() {this.src = this.src.replace("_over_", "_down_");}
   );

   $('input[type=submit]#btnCancel').bind('click', function(event) {
      thisID = this.id;
      if (confirm('Are You Sure?'))
      {
         return true;
      }
      else
      {
         event.preventDefault();
         return false;
      }
   });    
   
}
);