var agt = navigator.userAgent.toLowerCase();var is_ie = (agt.indexOf('msie') != -1);var is_ie5 = (agt.indexOf('msie 5') != -1);function http_create_request(handler) {var xmlhttp = null;if (is_ie) {var control = (is_ie5) ? "Microsoft.XMLHTTP" : "Msxml2.XMLHTTP";try {xmlhttp = new ActiveXObject(control);xmlhttp.onreadystatechange = handler;} catch(e) {alert("You need to enable active scripting and activeX controls");}
} else {xmlhttp = new XMLHttpRequest();xmlhttp.onload = handler;xmlhttp.onerror = handler;}
return xmlhttp;}
function http_dummy_handler() { }
var uniqnum_counter = (new Date).getTime();function http_get(xmlhttp, url) {xmlhttp.open('GET', url, true);xmlhttp.send(null);}
function http_send(url) {var xmlhttp = http_create_request(http_dummy_handler);++uniqnum_counter;http_get(xmlhttp, url + "&rand=" + uniqnum_counter);}
function mk_click(forum,topic,post) {var link = 'modload.php?&c_mod=forum&op=mark';http_send(link+"&forum="+forum+"&topic_id="+topic+"&pid="+post);}