function checkForm(form) {
		if (form.Name.value == "") {
			alert("Please enter your name ");
			form.Name.focus();
			return false;
		}
		var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		var c1 = form.Email.value;
		if (!(filter.test(c1))) {
			alert("Please enter a valid email address");
			form.Email.focus();
			return false;
		}
		if (form.Tel.value == "") {
			alert("Please enter a telephone number");
			form.Tel.focus();
			return false;
		}
		if (form.Cell.value == "") {
			alert("Please enter a cellphone number");
			form.Cell.focus();
			return false;
		}
		return true;
	}