HTML Code + Java Script not working

I wrote a gallery in HTML. If I start this on an HTML file, it works perfectly.
If I embed the HTML into the page, nothing is displayed (Firefox), with other browsers the preview is displayed distorted, only the slide show works correctly.
I also pasted the HTML via the Plugin Snippet, the same problem occurs here.

With “preview the page” when Login as Developper of the Site, all is working correctly

What could be the problem ?

  • This topic was modified 2 hours, 48 minutes ago by mywpacc4392gr.

The page I need help with: [log in to see the link]

 

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