DoubleClick function

<script type="text/javascript" id="DoubleClickFloodlightTag">
//<![CDATA[
function RegistrationBrochure (land01, iac_f000, u1) {
        var axel = Math.random()+"";
        var a = axel * 10000000000000000;
        var flDiv=document.body.appendChild(document.createElement("div"));
        flDiv.setAttribute("id","DCLK_FLDiv1");
        flDiv.style.position="absolute";
        flDiv.style.top="0";
        flDiv.style.left="0";
        flDiv.style.width="1px";
        flDiv.style.height="1px";
        flDiv.style.display="none";
        flDiv.innerHTML='<iframe id="DCLK_FLIframe1" src="http://5877472.fls.doubleclick.net/activityi;src=5877472;type=' + type + ';cat=' + cat + ';u1=' + u1 + ';ord=' + a + '?" width="1" height="1" frameborder="0"><\/iframe>';
}
//]]>
</script>