Problems with Windows and Layout

I am successfully using a dhxLayout and a grid and menu attached to it.
But I have significant problems adding some popup windows.
I am using a OnClick event from the menu to create a window. But the opened windows cannot be positioned (always have position in top left corner), cannot be moved and any attempt to close the window with a link or button (e.x. of a form) won’t work.
I already have tried several possible solutions I found in this forum, but none of them works.

So maybe I made a mistake in the initial construction of my index file.

Here is the (roughly shortened) code of my index.php. Can anyone help and tell me if the basic structure includes some big mistakes or can find the cause of this problem?


[...]more includes[...] html, body { width: 100%; height: 100%; margin: 0px; padding: 0px; overflow: hidden; } </head


I would appreciate any kind of help.
Thanks in advance
Marius :frowning:

Not enough of data.
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