throw new Components.Exception( "proxy has different id than its parent!"); 
throw new Components.Exception("proxy has different id than its parent!"); 
function isParent(item) {    if (item.id != item.parentItem.id) {        throw new Components.Exception(            "proxy has different id than its parent!");    }    return (!item.recurrenceId);}
5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5459/64fa0031c18ffbcccb6d772168cab3b330d991f6/calWcapUtils.js/clean/calendar/providers/wcap/calWcapUtils.js