rem: element._overflow = element.style.overflow; 
add: element._overflow = element.style.overflow || 'auto'; 
context:   makeClipping: function(element) {    element = $(element);    if (element._overflow) return;    element._overflow = element.style.overflow;    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')      element.style.overflow = 'hidden';  },
meta: 6601	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6601/28b3187d07d97712c23182569a4d6fd00900b5f7/prototype.js/buggy/javascript/prototype/prototype.js