If I get a link 

`<a href="/Users/ChangePassword.aspx" target="mainFrame">` in fraTopMenu, what 
(1) javascript can I add to get the current **mainFrame's URL** upon clicking the link and 
(2) append the URL to the querystrings?

```
<frameset rows="60,*" cols="*" frameborder="no" border="0" framespacing="0">
      <frame src="/Common/Manager/TopMenu.aspx"  name="fraTopMenu" scrolling="no" noresize="noresize" id="fraTopMenu" title="" />
      <frameset rows="*" cols="185,*" framespacing="0" frameborder="no" border="0">
        <frame src="..." name="leftFrame" id="leftFrame" title="" />
        <frame src="..." name="mainFrame" id="mainFrame" title="" />
      </frameset>
    </frameset>

```

Thank you.