Js Popup- Help needed

[Tanya]

Hello everyone,

Sorry for the long post- if anyone is willing to help me, I'll appreciate it very much!! I've been wrecking my brain with this....

I'm an interior designer and I'm trying to build my own website.
I spent some time doing HTML/CSS tutorials, then I selected a template and now I'm trying to modify it to my needs.

So In short- I'm a total noob, so I'm sorry if my question is stupid, or if the answer can be found elsewhere in the forum- I have looked and tried many things but I still have a problem.

Now, for the problem itself: I have all the sections of the site open in popup windows, I need a gallery to be inserted in one of the sections, and I need it to work completely inside the popup.

I have managed to get a gallery working. however, while the thumbnails are indeed inside the popup, the gallery itself is "floating" above it. Even what is inside the popup isn't working properly- the side navigation's up arrow somehow is above the X and there is this weird line....

there are a lot of different JS files and css sheets, So I'm putting here the original's (I have done no structural changes, just linked this two):

a link to the original template: http://www.priteshgupta.com/templates/vivid-photo/
a link to the gallery I used: http://www.ppplugins.com/downloads/ppgallery.php

all the other files remain unchanged- I have no idea how to even approach this problem. I have tried changing various parameters but no luck...

Thanks in advance,
Tanya.

[Tanya]

*by all other files I mean other then the HTML itself