public function init()
	{
		if(isset($this->htmlOptions['id']))
			$id=$this->htmlOptions['id'];
		else
			$id=$this->htmlOptions['id']=$this->getId();
		if($this->url!==null)
			$this->url=CHtml::normalizeUrl($this->url);
		$cs=Yii::app()->getClientScript();
		$cs->registerCoreScript('treeview');
		$options=$this->getClientOptions();
		$options=$options===array()?'{}' : CJavaScript::encode($options);
		$cs->registerScript('Yii.CTreeView#'.$id,"jQuery(\"#{$id}\").treeview($options);");
		if($this->cssFile===null)
			$cs->registerCssFile($cs->getCoreScriptUrl().'/treeview/jquery.treeview.css');
		elseif($this->cssFile!==false)
			$cs->registerCssFile($this->cssFile);

		echo CHtml::tag('ul',$this->htmlOptions,false,false)."\n";
		echo self::saveDataAsHtml($this->data);
	}