<div class="tpl-content-wrapper">
    <iframe id="frameId" frameborder="0" scrolling="no" height="auto" src=""  onLoad="iFrameHeight()"></iframe>
</div>

<script type="text/javascript" language="javascript">
    function iFrameHeight() {
        var ifm= document.getElementById("frameId");
        var subWeb = document.frames ? document.frames["frameId"].document :
            ifm.contentDocument;
        if(ifm != null && subWeb != null) {
            ifm.height = subWeb.body.scrollHeight;
        }
    }
</script>