<div id="tryitwindow" class="modal hide fade">
    <div class="modal-header">
        <a href="#" class="close">&times;</a>
        <h3>Try it now</h3>
    </div>
    <div class="modal-body">
        <iframe src="<%=urlString%>" style="border: none;" width="98%"
        height="520px" scrolling="no"></iframe>
    </div>

</div>

<p align="right">
    <button class="btn primary"  data-keyboard="true" data-backdrop="true"
    data-controls-modal="tryitwindow">Try it now</button>
    </p>