[Proto-Scripty] Any reason this BlindRight effect should not work in FireFox?

[Lochinvar]

Effect.BlindRight = function(element, content) {
  element = $(element);
  var content = content;
  var elementDimensions = element.getDimensions();
  new Effect.Scale(element, 100, Object.extend({
    scaleContent: false,
    scaleY: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height,
originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({
        width: '0px',
        height: effect.dims[0] + 'px'
      }).show();
    },
    afterFinishInternal: function(effect) {
       effect.element.undoClipping();
    }
  }, arguments[1] || { }));

        element.style.visibility = 'visible';
        element.innerHTML = "<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<img
src='./images/loading.gif'>";
  try {
    req = window.XMLHttpRequest ? new XMLHttpRequest(): new
ActiveXObject("Microsoft.XMLHTTP");
  }
  catch (e) { alert("No AJAX Support"); }
  req.onreadystatechange = function () {
//      if ((req.readyState == 4) && (req.status == 200)) {
         if(element) element.innerHTML = req.responseText;
//       if(callback_id) GETrequest_callbackHandler(callback_id);
//    }
  }
  req.open( 'GET',  content + '.php' );
  req.send( null );
};

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