NextGen-Gallery and other Javascript-Plugins seem to interferrer

Hi There,

I use the NextGen-Gallery to handle and display images in an easy way. As long, as I use no javascript-effect to display the fullsize of images, everything works fine.

I use a wordpress-theme, that has javascript-functionallity installed.

But trying to display the images in fullscreen using Highslide or Lightbox, I get some errors:

(1) using Highslide
The “Loading” icon over the image, I clicked appears, but nothing is done after that. The javascript functionallities of the theme work just fine.

(2) using Lightbox
The javascript-functionality of the theme is completely disabled. The Lightbox-Plugin just works fine and displays the images correctly.

Does anyone know, how I can use both javascript-functionalities, the great Lightbox-effect AND the built-in javascript-code of the theme.

For a better impression, visit:
https://www.sehendes-auto.de/?p=3
Inside the post, you see a picture. Clicking it, will try to open the image with the highslide-effect. –> does not work
But browse through the posts and displaying the best pages on the right side, just works fine.

Need some help!