rem: element.removeAttribute("hidden"); 
add: element.removeAttribute("collapsed"); 
context: function unHideElementByID (aElementID){  var element = document.getElementById(aElementID);  element.removeAttribute("hidden");}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/d6503846bffa0b3993b51798a03d37f248194452/commonDialog.js/buggy/xpfe/global/resources/content/commonDialog.js