I was just exploring a template and saw that they have empty javascript:{} in href attribute. It didn't seem to do much. Is this is just a place holder or some kind of comment that this nav works with javascript?
Please note that it was found in vav links that had unordered lists like below.

HTML Code:
 <li class="current"><a href="javascript:{}">Home</a>
                                <ul>
                                    <li class="current"><a href="index-2.html">Simple slider</a></li>
                                    <li><a href="home_full_slider.html">Fullwidth slider</a></li>
                                </ul>
                            </li>