add: return element; 
context:   undoPositioned: function(element) {    element = $(element);    if (element._madePositioned) {      element._madePositioned = undefined;      element.style.position =        element.style.top =        element.style.left =        element.style.bottom =        element.style.right = '';    }  },
meta: 6601	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6601/28b3187d07d97712c23182569a4d6fd00900b5f7/prototype.js/buggy/javascript/prototype/prototype.js