Moving a Window on an iPhone

When a DHTMLXWindow is displayed in a browser on a regular computer, the window can be moved by dragging it with the mouse. This allows the user to see what’s underneath the dialog box.

On an iPhone, iPad, etc using Safari, there seems to be no way of selecting the window and moving it.

Does anyone know how to do this or have any ideas so I can replicate the functionality?

drag-n-drop is different on the touch devices. dhtmlxWindows was not designed for such a devices. You may try to use our touch library for creating touch ui:
dhtmlx.com/touch/