// JScript File

// numeric field
  function numbersonly(myfield, e, dec) 
    {
 var key;
 var keychar;
 
 if (window.event)
    key = window.event.keyCode;
 else if (e)    key = e.which;
 else
    return true;
 keychar = String.fromCharCode(key);

 // control keys
 if ((key==null) || (key==0) || (key==8) || 
  (key==9) || (key==13) || (key==27) )
    return true;

 // numbers
 else if ((("0123456789").indexOf(keychar) > -1))
    return true;

 // decimal point jump
 else if (dec && (keychar == "."))
    {
    myfield.form.elements[dec].focus();
    return false;
    }
 else
    return false;
}

//blank field