Xara :: Submenu Links Are Treated As Popups By Google (Toolbar)?

Why submenu links are treated as popups by Google (Toolbar) when configured to open as a blank page (_blank). This only happens in Internet Explorer (8and 9) but not in FireFox. Disable Popup blocker in Tools and the links open as a blank page. Disable the whole toolbar and it works. Google Chrome does not treat it as popups. Here is a sample site: (The submenus are under "Real Estate Displays") [URL]...Most surfer don't know what's happening with the blocked pupups, especially if the have popup blocker disabled already in IE. The problem can be circumvented by choosing Same Window (_top) but that's not what I would like. Here is the code section in the index.htm file:

xr_startSubmenu('xr_links_b1','xr_links_menu1',146 );
xr_submenuItem("Private Display","private/index.htm","_blank","xr_links_plain1");
xr_submenuItem("Commercial Display","commercial/index.htm","_blank","xr_links_plain1");
xr_endSubmenu('xr_links_b1');

//]]></script>
<noscript><div style="position:absolute;">
<a href="private/index.htm" target="_blank">Private Display</a> <a href="commercial/index.htm" target="_blank">Commercial Display</a>
</div></noscript>

I know it has not much to do with Xara.