function ValidateForm(f){
	with(f){
		if (isEmpty(_1_Name.value)) {
			alert("Please enter your Name");
			_1_Name.focus();
			return false;
		}
		if (isEmpty(_5_Postcode.value)) {
			alert("Please enter your Postcode");
			_5_Postcode.focus();
			return false;
		}
		if (isEmpty(_6_Phone.value)) {
			alert("Please enter your Phone");
			_6_Phone.focus();
			return false;
		}
	
		if (isEmpty(_8_Email_From.value)) {
			alert("Please enter your Email Address");
			_8_Email_From.focus();
			return false;
		}
		
		if ( !isEmail(_8_Email_From.value) ) {
			alert("Please enter a valid Email Address.");
			_8_Email_From.focus();
			return false;
		}	
	}
	return true;
}