photogallery plugin and topmenu trouble

hi, i have a problem using the photogallery plugin and the topmenu with the template chameleon
When i look images with the photogallery plugin the top menu is still over the pix
How can i fix this ???
i have installed joomla 1.7 and the right version of the plugin.
Thank you ^^

and second problem, there's no arrow over the image when the mouse is over

^^ sorry i'd found the answer of this question in the forum

Can you post us link so we could inspect problems regarding your first question?

thanks for support,
I had just put the site online, so I can post a link

www.max23.fr/index.php/wallpaper
or
www.max23.fr/index.php/photos/entrainements/20-110602maricourt

this is the photogallery plugin. when a pix is shown on the lightbox the topmenu is always up the image.

Hi,

add this to the bottom of template_css.css:

#jquery-lightbox{
z-index:20000;
}

thank you ^^ it works fine

another question ^^
I don't know how to embed a youtube video in a article
even when I switch in html it doesn't work the code is in the article but nothing is shown on the article page.