CodingForums.com - Potential Memory Leak when with Ajax

Hi all.
I'm using JavaScript to call a server side service provided by an IBMBPM Tool (Lombardi teamworks), to retrieve an XML object.

I've stripped it down to the bare essentials below.
When I click on the button, it runs the call 5000 times.
Any browser grabs a whole load of memory and never lets go of it. What Am I doing wrong here?

The code is below.

Code:

<script>



    function makeRequest(url, params, callBack) {

        var http_request = false;

        if (window.XMLHttpRequest) { // Mozilla, Safari, ...

            http_request = new XMLHttpRequest();

            if (http_request.overrideMimeType) {

                http_request.overrideMimeType('text/xml');

                // See note below about this line

            }

        } 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('Giving up :( Cannot create an XMLHTTP instance');

            return false;

        }

        http_request.onreadystatechange = function() {

                if (http_request.readyState == 4) {

            if (http_request.status == 200) {

                callBack(http_request.responseText);

            } else {

                alert('There was a problem with the request.');

            }

        }};

        http_request.open('GET', url, true);

        http_request.send(params);

    }



tw.coach.callServiceRegus = function(service, params, callBack, snapshot) {

 if(snapshot == "" || snapshot == null) {

     // coachSnapshotContext is injected via the CoachDesigner.xsl

     snapshot = coachSnapshotContext;

 }

 var url = "/portal/jsp/callService.do?serviceName=" + service + "&snapshotId=" + snapshot;

 makeRequest(url, params, callBack);

};





function getTickets(){

    var data;

    var inputVar = '<input><variable name="inputVar">dion.jones</variable>'

    inputVar += '<variable name="sortOrder">t.Priority, t.CreateDate</variable>'

    inputVar += '<variable name="displayType">UserLandingPage</variable>'

    inputVar += '</input>';

    tw.coach.callServiceRegus('SORGetUserTicketsXML', 

      inputVar,

      function(data){

      }

    );

}





function explode(){

for (var i = 0 ; i < 5001 ; i++) {

getTickets();

}

alert("done");

}

</script>









This button is in the HTML on the page.



<!-- Refrech Button -->



<input type="button" onclick="explode();" value="clickerty-Click!" />