How can I start Illustrator visible?

Hello,

I want to start Illustrator and load a file on Windows environment by executing a Java-Script with the windows Scripting Host. The content of the Java-Script file is like:

var illustrator = new ActiveXObject("Illustrator.Application");

illustrator.open("c:\\temp\\1.pdf");

Illustrator starts, I see the Splash-Screen but after that no window of Illustrator appears while Illustrator is shown running in the task manager.

Similar calls to InDesign and Photoshop work well. The programs are started and shown on the screen.

Is there a possibility to get it running, without a Shell-Exec?

Thank you in advance