public function preRender()
    {
        $returnValue = (string) '';

        
		if(!empty($this->tag)){
			$returnValue .= "<{$this->tag}";
			if (isset($this->attributes['cssClass'])) {
			    // legacy
			    $this->attributes['class'] = $this->attributes['cssClass'].
                    (isset($this->attributes['class']) ? ' '.$this->attributes['class'] : '');
			    unset($this->attributes['cssClass']);
			}
			foreach ($this->attributes as $key => $value) {
			    $returnValue .= ' '.$key.'=\''.$value.'\' ';
			}
			$returnValue .= ">";
		}
        return (string) $returnValue;
    }