function checkvalid() {



	if (document.contact.email.value==""){

		alert("Please enter your E-mail!");

		return false;

	}



	if (document.contact.content.value==""){

		alert("Please enter your Content!");

		return false;

	}



	if (document.contact.title.value==""){

		alert("Please enter Subject!");

		return false;

	}



	if (document.contact.name.value==""){

		alert("Please enter your Name!");

		return false;

	}



	if (document.contact.tel.value==""){

		alert("Please enter your Tel!");

		return false;

		}

	return true;

}