Gallery Index Page back link url [SOLVED]

It's quite a clever idea to close what would normally be the 'href' attribute with a double-quote at the beginning of the 'Back link URL' and then add an 'onclick' attribute (knowing that Showkase will add a double-quote at the end).
This creates valid HTML code and there is nothing wrong with such a solution.
If using this technique, then I would probably use something like the following:

" onclick="javascript: window.parent.location.href='http://www.example.com/'; return false;

It just tidies up a few things (for example adding a space after the opening double-quote, using lower-case characters for the attribute name and adding return false; at the end so that the 'href' value, which is empty anyway, is ignored).

An alternative solution would be to add a value for the 'href' attribute and then add a 'target' attribute in the same way you add the 'onclick' attribute.
The following should also work:

http://www.example.com/" target="_parent

This might be a little simpler as it does not use any JavaScript.