function checkcontact(f) {

	 	if(f.firstname.value == "" || f.firstname.value == " ") {
			alert('Please enter First Name');
			f.firstname.focus();
			return false;
		}

	 	if(f.lastname.value == "" || f.lastname.value == " ") {
			alert('Please Enter Last Name');
			f.lastname.focus();
			return false;
		}

	 	if(f.phone.value == "" || f.phone.value == " ") {
			alert('Please Enter Phone Number');
			f.phone.focus();
			return false;
		}
 
	 	if(f.email.value == "" || f.email.value == " ") {
			alert('Please enter Email');
			f.email.focus();
			return false;
		}
		
		if(f.comments.value == "" || f.email.value == " ") {
			alert('Please enter Comments');
			f.comments.focus();
			return false;
		}

		return true;
}