var ww='captcha_test_res(reqe.responseText)';


function sendtoserver(url,data) { 
  // branch for native XMLHttpRequest object 
  if (window.XMLHttpRequest) { 
    reqe = new XMLHttpRequest(); 
    reqe.onreadystatechange = receiveformserver; 
    reqe.open('POST', url, true); 
    reqe.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); 
    reqe.send(data); 
    // branch for IE/Windows ActiveX version 
 } 
  else if (window.ActiveXObject) { 
    reqe = new ActiveXObject('Microsoft.XMLHTTP');
     if (reqe) { 
      reqe.onreadystatechange = receiveformserver; 
      reqe.open('POST',url, true); 
      reqe.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); 
    	 reqe.send(data); 
    } 
  } 
  
}


function receiveformserver() {
// only if req shows 'loaded' 
   if (reqe.readyState == 4) { 
 
    // only if 'OK' 
     if (reqe.status == 200) { 
		   eval(ww);
       
    } else { 
      alert('خطا'); 
    } 
	   	 
  }  
} // JavaScript Document
function captcha_test_res(info){
var r=info.indexOf('captcha_is_true');
if(r==-1){
var obj=document.getElementById('captcha_img');
//document.getElementById('captcha_img').innerHTML ='<div style=\"width:130px; height:25px;\"><center><img src="img/delete.png" alt="" title=""  /></center></div>';
document.getElementById('captcha').value='';
show_img('captcha/image.php','');
document.getElementById('captcha').readOnly = false;
}

else{
var obj=document.getElementById('captcha_img');
document.getElementById('captcha_img').innerHTML ='<div style=\"width:130px; height:25px;\"><center><img src="img/checkmark.png" alt="" title=""  /></center></div>';
document.getElementById('captcha').readOnly = true;
}
}
//----------------------------------------------------
function is_captcha_true(){
var code=document.getElementById('captcha').value;
if(code.length==5){
document.getElementById('captcha').readOnly = true;
var obj=document.getElementById('captcha_img');
document.getElementById('captcha_img').innerHTML ='<div style=\"width:130px; height:25px;\"><center><img src="js_lib/loading_img.gif" alt="" title=""  /></center></div>';
data='captchacode='+code;
sendtoserver('test.php',data);
}
}