You can determine how your browser popups should be displayed.
For this, prevent Java Script from hiding certain control elements and functions using the extended browser configuration. Type "about:config" in the address bar of the browser and press [Enter]. In the filter field, type "dom.disable" in order to find the "dom.disable_window_open_feature. resizable" entry in the list. A double-click sets it to "true"-the size of the windows can now be changed.