         if (collectionChanged)
         {
             if (selectedIndex == -1 && implicitSelectedIndex && _prompt == null)
-            	selectedIndex = 0;
+                selectedIndex = 0;
             selectedIndexChanged = true;
             collectionChanged = false;
         }

    //  Overridden event handlers
    //
    //--------------------------------------------------------------------------
	private var implicitSelectedIndex:Boolean = false;
    /**
     *  @private
     */

     *  <code>labelField</code> property, returns the contents of the property.</li>
     *    <li>If the item has a label property, returns its value.</li>
     *  </ol>
     * 
     *  @param item The object that contains the value to convert to a label. If the item is null, this method returns the empty string.
     */
    public function itemToLabel(item:Object):String
    {
