code: function scrollBy( x, y ) {
  				// Webkit doesn't support "scrollTop/scrollLeft"
  				// on documentElement/body element.
  				if ( /body|html/.test( parent.getName() ) )
  					parent.getWindow().$.scrollBy( x, y );
  				else {
  					parent.$.scrollLeft += x;
  					parent.$.scrollTop += y;
  				}
  			}
docs: Scroll the parent by the specified amount.