function silentErrorHandler() {return true;}
window.onerror=silentErrorHandler;

// Requires mootools
// adds onmouseover to all images with
// class .roll
window.addEvent('domready',function(){
  $$('img.roll, input.roll').each(function(img) {
    var src = img.getProperty('src');
    var extension = src.substring(src.lastIndexOf('.'),src.length)
    img.addEvent('mouseenter', function() { img.setProperty('src',src.replace(extension,'.roll' + extension)); });
    img.addEvent('mouseleave', function() { img.setProperty('src',src); });
  });

  var i = 0;
});