rem: delete element._overflow; 
add: element._overflow = null; 
context:   undoClipping: function(element) {    element = $(element);    if (!element._overflow) return;    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;    delete element._overflow;    return element;  }
meta: 527	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/527/55c6c64da0fbbfba74a0b4ad68022bf640a0a049/prototype.js/clean/actionpack/lib/action_view/helpers/javascripts/prototype.js