Linking from III Encore 4.2 SHL store journal bib record display

<script type="text/javascript">
    var urlindex = document.URL.indexOf('record/C__R');
    recordid = document.URL.substring(urlindex + 11, urlindex + 19);

    function stackrequest() {
        var holdingsdiv = document.getElementById('toggleAnyComponent');
        if (holdingsdiv) {
            if (holdingsdiv.innerHTML.match(/STACK SERVICE/)) {
                stackrecordid = recordid.substring(1);
                var requeststub = "http://www.ulrls.lon.ac.uk/stackrequest/parse.aspx?record=";
                var stackrequestDiv = document.createElement('div');
                stackrequestDiv.innerHTML = '<div style="padding-bottom: 15px;" class="taggingLink">' + '<a id="stackrequestbutton" target="_blank" title="Request from Store" href="' + requeststub + stackrecordid + '">Request from Store</a>' + '</div>';
                document.getElementById("customTop").appendChild(stackrequestDiv);
            }
        }
    }
</script>