rem: var datePickerValue = getDateTimeFieldValue( "exception-dates-text" ); 
add: var datePickerValue = document.getElementById( "exceptions-date-picker" ).value; 
context: function updateAddExceptionButton(){   //get the date from the picker   var datePickerValue = getDateTimeFieldValue( "exception-dates-text" );      if( isAlreadyException( datePickerValue ) || document.getElementById( "repeat-checkbox" ).getAttribute( "checked" ) != "true" )   {      document.getElementById( "exception-add-button" ).setAttribute( "disabled", "true" );   }   else   {      document.getElementById( "exception-add-button" ).removeAttribute( "disabled" );   }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/a8db41c3cf2888eb555ad13d4c2651f31f85a4d3/eventDialog.js/clean/calendar/resources/content/eventDialog.js