function verifyCaptcha(code){var ret=false;var req;var url="/captcha-checker.php?code=";try{req=new XMLHttpRequest();}catch(err1){try{req=new ActiveXObject("Msxml12.XMLHTTP");}catch(err2){try{req=new ActiveXObject("Microsoft.XMLHTTP");}catch(err3){req=false;}}}if(req){req.open("GET",url+escape(code),false);req.send(null);if(req.readyState==4){if(req.status==200){if(req.responseText=="1"){ret=true;}}else{alert("Unable to check captcha:\n"+req.statusText);}}}else{alert("Unable to check captcha: your browser doesn't support AJAX");}return ret;}