fileSelector.setFilterExtensions(new String[]{"*.css;*.CSS"});
			public void widgetSelected( SelectionEvent e )			{				FileDialog fileSelector = new FileDialog( PlatformUI.getWorkbench( )						.getDisplay( )						.getActiveShell( ),						SWT.NULL );				String fileName = fileSelector.open( );				if ( fileName != null )				{					fileNameField.setText( fileName );				}			}