rem: datePickerPopup.setAttribute( "value", dateField.editDate ); 
add: setFieldValue( "oe-date-picker-popup", dateField.editDate, "value" ); 
context: function prepareDatePicker( dateFieldName ){   // get the popup and the field we are editing      var datePickerPopup = document.getElementById( "oe-date-picker-popup" );   var dateField = document.getElementById( dateFieldName );      // tell the date picker the date to edit.      datePickerPopup.setAttribute( "value", dateField.editDate );      // remember the date field that is to be updated by adding a    // property "dateField" to the popup.      datePickerPopup.dateField = dateField;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/2916e62d7bb7a5616da721a0909b35d27c946925/eventDialog.js/buggy/calendar/resources/content/eventDialog.js