//firefox não suporta innerText
Element.addMethods({
  getInnerText: function(element) {
    element = $(element);
    return element.innerText && !window.opera ? element.innerText
      : element.innerHTML.stripScripts().unescapeHTML().replace(/[\n\r\s]+/g, ' ');
  },
  setInnerText: function(element, text) {
  	element = $(element);
  	if  (element.textContent)  {
		element.textContent = text;
  	} else {
		element.innerText = text;
  	}
  }
});


Effect.PopOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: -100, sync: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned(); 
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        } 
      }, arguments[1] || {}));
}