/**
  * Sets the coordinates of the element   
  * @param int $left The leftmost pixel of the element on the canvas 
  * @param int $top The topmost pixel of the element on the canvas 
  * @param int $right The rightmost pixel of the element on the canvas 
  * @param int $bottom The bottommost pixel of the element on the canvas 
  * @access private
  */
 function _setCoords($left, $top, $right, $bottom)
 {
     parent::_setCoords($left, $top, $right, $bottom);
     $this->_alignSize = false;
 }