function clickclear(thisfield, defaulttext) {
if (thisfield.value == defaulttext) {
thisfield.value = '';
}
}
// fieldname, remainingname, maxchars
function CheckFieldLength(fn,rn,mc) {
  var len = fn.value.length;
  if (len > mc) {
    fn.value = fn.value.substring(0,mc);
    len = mc;
  }
  document.getElementById(rn).innerHTML = mc - len;
}