function searchCheck() {
  retval = true;
  supp = " is a required field.\n";
  errstr = "";
  f = document.searchprofiles;
  if(f.plname.value=="" && f.psport.value=="" && f.pschool.value=="") {
    errstr += "At least ONE search field is required.";
    retval=false;
  }
  if(!retval){ alert(errstr); }
  return retval;
}