记录表单数据的函数

	//保存表单数据到cookies函数
	function saveRequest($scope)
	{
		//scope will be a array like $_POST or $_GET
		while(list($key,$value)=each($scope))
		{
			setcookie("request_".$key,$value);
		}
	}
	
	//清除cookies的表单数据
	function clearRequest($scope)
	{
		//scope will be a array like $_POST or $_GET
		while(list($key)=each($scope))
		{
			setcookie("request_".$key);
		}	
	}
	
	//取得cookies中的表单数据
	function getRequest($key)
	{
		return $_COOKIE["request_".$key];
	}