function validate_email(field,alerttxt)
{
with (field)
{
apos=value.indexOf("@");
dotpos=value.lastIndexOf(".");
if (apos<1||dotpos-apos<2) 
  {alert(alerttxt);return false;}
else {return true;}
}
}

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

function validate_form(thisform)
{
with (thisform)
{
  if (validate_required(FirstName,"You must add your first name")==false)
  {FirstName.focus();return false;}
  if (validate_required(LastName,"You must add your last name")==false)
  {LastName.focus();return false;}
  if (validate_email(document.getElementById('email'),"You must add a valid email address")==false)
  {document.getElementById('email').focus();return false;}
	if (validate_required(CompanyName,"You must add your organization name")==false)
  {CompanyName.focus();return false;}
  if (validate_required(NumberofEmployees,"You must add your number of workstations")==false)
  {NumberofEmployees.focus();return false;}
}
}