WordPress Posts in Lightbox, how do I make google index these and not the single.post page

This is my travel blog http://www.laaventura.co.uk

There is only a homepage with all post opening in a iframed thickbox lightbox

The thickbox class and extra link text is added with this javascript call after the page is loaded

a(".more-link").addClass("thickbox");
    a(".more-link").attr("href", function() {
        return this.href + "?KeepThis=true&TB_iframe=true&height=750px&width=500"
})

This adds the lightbox link to all read more links.

What I assume is that google will indexed the single-post.php file rather than opening the post in the lightbox on the home page is there any way to make google link directly to the lightbox?