function ja_heartbeat_initRequest(){if(window.XMLHttpRequest){return new XMLHttpRequest();}else{if(window.ActiveXObject){isIE=true;return new ActiveXObject("Microsoft.XMLHTTP");}else{return false;}}}function ja_heartbeat_update(sessionId){var url="/ping;jsessionid="+sessionId+"?"+new Date().getTime();var req=ja_heartbeat_initRequest();if(req){req.onreadystatechange=function(){};req.open("GET",url,true);req.send(null);}}function ja_heartbeat(delay,sessionId){window.setTimeout('ja_heartbeat_update("'+sessionId+'"); ja_heartbeat('+delay+',"'+sessionId+'");',delay);}
