CSS / JS: Dialog Window

We need a dialog-window as a standard module to be used in our CMS. The dialog will give the user a selection in a collapsible list. The list items can be lines of text or thumbnails, to select an image. The result of the user selection is passed back to the function, that started the dialog. ## Deliverables The dialog-window will be started by the user, passing the url of the wanted selection to the starting function. The needed selection-html is loaded from the server into a dialog-iframe within the web-page. The selection list needs to be written a function from the data in an Array that is included in the dialog-html (Our server has written that Array dynamically on request). The user makes a selection, and the selected value is returned to the calling function. The selection list needs to be a collapsible list, mainly based on CSS-functionality. The list has one or two folder-levels and one content-level, which shows either lines of text or thumbnails with sub-text. You may use standard CSS-solutions for collapsible lists, that you adapt to our needs. See attached test-setup for further details.