var http_request = false;
   function makePOSTRequest_login(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents_login;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents_login() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            //document.getElementById('myspan').innerHTML = result;            
            if (result == 'wrongpass') {
            	alert('Неверный пароль'); 
            	document.getElementById('pass_contain').innerHTML = '<input type="password" name="pass" id="admenter_pass" class="admenter" />';
            }
            else if (result == 'rightpass') { location.href='adm0945/index.php?tp=edit_news&option=list';}
            else { alert('Ошибка');}

         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get_login(obj) {
      var poststr = "login=" + encodeURI( document.getElementById("admenter_login").value ) +
                    "&pass=" + encodeURI( document.getElementById("admenter_pass").value );
      document.getElementById('pass_contain').innerHTML = '<img src="template/images/login.gif" style="margin-top: 3px;">';
      makePOSTRequest_login('./adm0945/enter_ajax.php', poststr);
   }