function loadCaptcha(){
             new ajax ("/cgi-bin/captcha.cgi?get", {method: 'GET', onComplete: setCaptcha});
       }
       function setCaptcha(request){
             var CaptchaData = request.responseText.split("|");
             window.document.captchapic.src = CaptchaData[1];
             document.form["captchamd5"].value = CaptchaData[0];
       }
       loadCaptcha();