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_form(thisform)
{
with (thisform)
  {
  if (validate_email(email,"Not a valid e-mail address!")==false)
    {email.focus();return false;}
  }
  if(thisform.fname.value == '') {
    alert('Please enter your First Name');thisform.fname.focus();return false;
  } else if(thisform.lname.value == '') {
    alert('Please enter your Last Name');thisform.lname.focus();return false;
  } else if(thisform.phone.value == '') {
    alert('Please enter your phone number');thisform.phone.focus()return false;
   } else {
   	return true;
   }
}