rem: if (!element._overflow) return; 
add: if (!element._overflow) return element; 
context:   undoClipping: function(element) {    element = $(element);    if (!element._overflow) return;    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;    element._overflow = null;    return element;  }
meta: 4053	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4053/e4fbd7ea1ad67665241c7a4b0836d999119110a3/prototype.js/clean/lib/prototype.js