Magento Call Java script Function in XML Top links.

<reference name="top.links">
    <action method="addLink" translate="label title" module="smartproductfinder">
        <label>Smart Product Finder</label>
        <title>javascript:void(0)</title>
        <prepare/><aParams/>
        <position>10</position>
        <li/><a>data-reveal-id="myModal"</a>
    </action>
</reference>