Clicktag IAB

1. ADD script to head function
<script>
var getUriParams = function() {
    var query_string = {}
    var query = window.location.search.substring(1);
    var parmsArray = query.split('&');
    if(parmsArray.length <= 0) return query_string;
    for(var i = 0; i < parmsArray.length; i++) {
        var pair = parmsArray[i].split('=');
        var val = decodeURIComponent(pair[1]);
        if (val != '' && pair[0] != '') query_string[pair[0]] = val;
    }
    return query_string;
}();
<!-- add closebutton function here-->
</script>


2. ADD & WRAP <canvas>
<a href="#clicktag" id="IAB_clicktag" target="_blank">
<canvas ...
</a>


3. ADD script before body end
<script>document.getElementById('IAB_clicktag').setAttribute('href', getUriParams.clicktag);</script>
</body>