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

// Valid Email
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;}
    }
}

// Valid Phone
//function checkPhone(field,alerttxt) 
//{
//with (field)
//{
//   stripped = field.replace(/[\(\)\.\-\ ]/g, '');
//   if (isNaN(parseInt(stripped))||(stripped.length<10)) {
//      {alert(alerttxt);return false;}
//   else {return true;}
//      }
//}