// Title: validation
// Date: 22:36 19 March 2007
// Version: 
// Copyright: Copyright (c) 1994-2007 Global Web Limited 
// Telephone: +44 1224 332211
// Web: http://www.globalweb.co.uk

function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false}
else {return true}
}
}

function validate_form(thisform)
{
var answer = true;

with (thisform)
{
if (validate_required(region,"You need to choose your region")==false) {region.focus();answer=false}
else
if (validate_required(school,"You need to choose your school")==false) {school.focus();answer=false}
else
if (validate_required(teacherName,"You need to enter your school's post code")==false) {postcode.focus();answer=false}
else
if (validate_required(primary,"You need to enter your primary level")==false) {primary.focus();answer=false}
else
if (validate_required(teacherName,"You need to enter your teacher's name")==false) {teacherName.focus();answer=false}
else
if (validate_required(date,"You need to the date of these observations")==false) {date.focus();answer=false}
else
if (validate_required(cloud,"You need to enter your cloud cover observation")==false) {cloud.focus();answer=false}
else
if (validate_required(temperature,"You need to enter your temperature observation")==false) {temperature.focus();answer=false}
else
if (validate_required(conditions,"You need to enter your conditions observations")==false) {conditions.focus();answer=false}
}

if (answer==true)
{
  thisform.elements['submitButton'].disabled=true;
}

return answer;
}