function check()
	{

		if (document.feedback.Company.value=="")
		{
			alert("input the company please！");
			document.feedback.Company.focus();
			return false;
		}
		if (document.feedback.Name.value=="")
		{
			alert("input your true name please！");
			document.feedback.Name.focus();
			return false;
		}
		if (document.feedback.Tel.value=="")
		{
			alert("input your telephone please！");
			document.feedback.Tel.focus();
			return false;
		}
		if (document.feedback.Email.value=="")
		{
			alert("input your E-mail please！");
			document.feedback.Email.focus();
			return false;
		}
		if (document.feedback.Address.value=="")
		{
			alert("input your address please！");
			document.feedback.Address.focus();
			return false;
		}
		if (document.feedback.Postcode.value=="")
		{
			alert("input your postcode please！");
			document.feedback.Postcode.focus();
			return false;
		}
		if (document.feedback.Content.value=="")
		{
			alert("input the content please！");
			document.feedback.Content.focus();
			return false;
		}
	}

// JavaScript Document