function checkform ( form )
{
  if (form.email.value == "") {
	alert( "Please enter your email address." );
   	form.email.focus();
    return false ;
 }
  if (form.name.value == "") {
    alert( "Please enter your full name." );
    form.name.focus();
    return false ;
  }
   if (!isEmailAddr(form.email.value))
  {
    alert("Please enter a complete email address in the form: yourname@yourdomain.com");
    form.email.focus();
    return (false);
  }	
   return true ;
}
function isEmailAddr(emailaddr)
{
  var result = false
  var theStr = new String(emailaddr)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
		result = true;
  }
  return result;
}