HtmlDialog position

[bomastudio]

In a dual monitor config, how can I check in which monitor SU is running, so I can locate correctly a HTMLDialog?

For example, immagine the following config:

MONITOR 1 on right
MONITOR 2 on left (where SU is running)

and the following code

dialog = UI;;HtmlDialog.new({
			  ;dialog_title => "MyWindow",
			  ;scrollable => true,
			  ;resizable => true,
			  ;width => 300,
			  ;height => 250,
			  ;left => 0,
			  ;top =>0,
			  ;style => UI;;HtmlDialog;;STYLE_UTILITY
			})

The dialog will apper outside from SU, in the MONITOR 1 instead of MONITOR 2 where is SU.