rem: if( isAlreadyException( dateToAdd ) ) return; 
add: if ( isAlreadyException( dateToAdd ) ) return; 
context: function addException( dateToAdd ){   if( !dateToAdd ) {      //get the date from the date and time box.      //returns a date object      dateToAdd = document.getElementById( "exceptions-date-picker" ).value;   }      if( isAlreadyException( dateToAdd ) )      return;   var DateLabel = formatDate( dateToAdd );   //add a row to the listbox.   var listbox = document.getElementById( "exception-dates-listbox" );   //ensure user can see that add occurred (also, avoid bug 231765, bug 250123)   listbox.ensureElementIsVisible( listbox.appendItem( DateLabel, dateToAdd.getTime() ));   //sizeToContent();}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/e1f5e420817ca9cf29dafabdbab36734bd3cc925/eventDialog.js/buggy/calendar/resources/content/eventDialog.js