function checkWholeForm(logForm) {
    var why = "";
	why += checkContact(logForm.contact_name.value);
	why += checkAddress1(logForm.company_address_1.value);
	why += checkPostCode(logForm.company_post_code.value);
	why += checkEmail(logForm.contact_email.value);
	why += checkPhone(logForm.contact_phone.value);
    if (why != "") {
       alert(why);
       return false;
    }
return true;
}

function checkContact (strng) {
	var error = "";
	if (strng == "") {
	  error = "enter a contact name.\n";
	}
	return error;
}

function checkAddress1 (strng) {
	var error = "";
	if (strng == "") {
	  error = "enter company address.\n";
	}
	return error;
}

function checkPostCode (strng) {
	var error = "";
	if (strng == "") {
	  error = "enter post code.\n";
	}
	return error;
}

function checkEmail (strng) {
	var error = "";
	if (strng == "") {
	  error = "enter email address.\n";
	}
	return error;
}

function checkPhone (strng) {
	var error = "";
	if (strng == "") {
	  error = "enter phone number.\n";
	}
	return error;
}