XMLHttpRequest + setTimeout = Mem grows to heaven

[vBulle]

I'm developing a chrome extension and I tried hard all the solutions in the web but no one seems to work. My jsscript only consume an html (about 13,30k per request) via XMLHttpReq(XHR) and parse the response , dropping everything that no match with some regex. All this happen with a setTimeout inside in the XHR onload method and seems to work but the problem comes after 10minutes aprox. when I saw what happens in memory. After 10minutes the extensions mem grows from 10mb to 60. So ..what happens and exist any kind of solution to this? I read that is a normal grow because its a new request and the Garbage Collector runs after a while (so late) but for my its another thing. Thanks in advance and SORRY FOR MY BAD ENGLISH. \[code\] var CHECK_TIME = 30000; var request = new XMLHttpRequest(); var checkLastPage = { url:"http://www.last.fm/inbox", inboxId:"inboxLink", lastAttempt:0, init : function(){ request.onload = function(){ checkLastPage.loadStuff(request); setTimeout(checkLastPage.init, CHECK_TIME); } request.open("GET",checkLastPage.url,false); request.send(); }, loadStuff:function(request){ var node = checkLastPage.getInboxNode(request);//...more code }, getInboxNode:function(request){ var htmlTemp = document.createElement('div'); htmlTemp.innerHTML = request.responseText; // Hack horrible para poder parsear el nodo importante var htmlResponse = htmlTemp.getElementsByTagName('li'); var relevantNode = null; for (var i = 0; i < htmlResponse.length; i++) { var node = htmlResponse; if(node.id == checkLastPage.inboxId){ relevantNode = node; } } htmlResponse = null; htmlTemp = null; return relevantNode; }, //...more code}\[/code\]