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    <?php
      require_once ("../xajax/xajax.inc.php");
      //·þÎñÆ÷´¦Àíº¯Êý
      function processForm($aFormValues)
      {
       $objResponse = new xajaxResponse();
       $bError = false;
       //Çå¿Õ´íÎóÐÅÏ¢
       $objResponse->addClear("usernameInfo", "innerHTML");
       //ÅжÏÕ˺Å
       if (trim($aFormValues['username']) == "")
       {
        $objResponse->addAppend("usernameInfo", "innerHTML", "Please Input user name.");
        $bError = true;
       }
       else
       {
          if(trim($aFormValues['username'])=="Thomas")
           $objResponse->addAppend("usernameInfo", "innerHTML", "Has been registed");
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