SharePoint 2010: Create a bookmark button that adds a page to your My Links

Question

I am trying to create a link/button on my masterpage which when clicked, adds the current page to the user's My Links list. This is merely a shortcut to save the user from having to navigate to their My Site and add the link manually.

[This blog post] gives a solution to this problem, but I get a JavaScript error on the second line of the "Add Link" dialog (QuickLinksDialog2.aspx) because the frameElement property is null:

<script language="Javascript">
    var form = document.forms[0];
    var args = window.parent.frameElement.dialogArgs;

Regardless, Portal.js appears to contain all the functions that the My Links page (_layouts/MyQuickLinks.aspx) uses to add links to this list.

Can anyone suggest how I might go about calling one/some of these functions from my masterpage so that the "Add Link" dialog is opened with the title and URL fields pre-poulated?