CommunityID/modules/default/views/scripts/history/index.phtml

<script>
YAHOO.util.Event.onDOMReady(function () {
    COMMID.loader.insert(
        ["datasource", "datatable", "paginator", "json", "connection", "dragdrop", "animation", "container"],
        COMMID.historyList.init,
        COMMID.historyList
    );
});
</script>
<div id="paging"></div>
<div id="dt"></div>
<div id="clearHistory">
    <input type="button" id="clearHistoryBtn" value="<?php echo $this->translate('Clear History') ?>" onclick="COMMID.historyList.clearEntries()" />
    <script type="text/javascript">
        YAHOO.util.Event.onDOMReady(function () {
            var oButton = new YAHOO.widget.Button(
                "clearHistoryBtn",
                {
                    type    : "push",
                    onclick : {fn: COMMID.historyList.clearEntries, scope: COMMID.historyList}
                }
            );
        });
    </script>
</div>