// ===================================================================
  // Author: Matt Kruse <matt@mattkruse.com>
  // WWW: http://www.mattkruse.com/
  //
  // NOTICE: You may use this code for any purpose, commercial or
  // private, without any further permission from the author. You may
  // remove this notice from your final code if you wish, however it is
  // appreciated by the author if at least my web site address is kept.
  //
  // You may *NOT* re-distribute this code in any way except through its
  // use. That means, you can include it in your product, or your web
  // site, or any other form where the code is actually being used. You
  // may not put the plain javascript up on your site for download or
  // include it in your javascript libraries for download. 
  // If you wish to share this code with others, please just point them
  // to the URL instead.
  // Please DO NOT link directly to my .js files from your site. Copy
  // the files to your server and use them there. Thank you.
  // ===================================================================
  
  // -------------------------------------------------------------------
  // TabNext()
  // Function to auto-tab phone field
  // Arguments:
  //   obj :  The input object (this)
  //   event: Either 'up' or 'down' depending on the keypress event
  //   len  : Max length of field - tab when input reaches this length
  //   next_field: input object to get focus after this one
  // -------------------------------------------------------------------
  function validate(myForm){
  	if(!IsNumeric(myForm.ssn1.value)){
  		alert("Please enter a valid SSN number");
  		myForm.ssn1.focus();
  		return (false)
  	}
  	if(!IsNumeric(myForm.ssn2.value)){
  		alert("Please enter a valid SSN number");
  		myForm.ssn2.focus();
  		return (false)
  	}
  	if(!IsNumeric(myForm.ssn3.value)){
  		alert("Please enter a valid SSN number");
  		myForm.ssn3.focus();
  		return (false)
  	}
  	if(myForm.lastname.value==""){
  		alert("Please enter a Last name.");
  		myForm.lastname.focus();
  		return false;
  	}
  }
  function IsNumeric(strString)
     //  check for valid numeric strings	
     {
     var strValidChars = "0123456789.-";
     var strChar;
     var blnResult = true;
  
     if (strString.length == 0) return false;
  
     //  test strString consists of valid characters listed above
     for (i = 0; i < strString.length && blnResult == true; i++)
        {
        strChar = strString.charAt(i);
        if (strValidChars.indexOf(strChar) == -1)
           {
           blnResult = false;
           }
        }
     return blnResult;
     }
  
  var phone_field_length=0;
  function TabNext(obj,event,len,next_field) {
  	if (event == "down") {
  		phone_field_length=obj.value.length;
  		}
  	else if (event == "up") {
  		if (obj.value.length != phone_field_length) {
  			phone_field_length=obj.value.length;
  			if (phone_field_length == len) {
  				next_field.focus();
  				}
  			}
  		}
  	}

function checkform ( form )
{


  // ** START **
  if (form.fname.value == "") {
    alert( "Did you enter a First Name?" );
    form.fname.focus();
    return false ;
  }

    if (form.lastname.value == "") {
    alert( "Did you enter a Last Name?" );
    form.lname.focus();
    return false ;
  }
  // ** END **
  return true ;
}