How to fix IE browser mode in IE8

Hello,

I am implementing a system and my customer use web client.
There is one dataprocessor with html document and I add an i frame inside of the html. The i fram has an activeX control which is only working on IE8.
Problem is that our customer use IE9 and 10.
When I implement similar system using .net, I just use content="IE=EmulateIE8" then it works fine.
But the code does not work on the 1C web client.
Is there anyone can help me?
Any kind of comment will be welcomed.

Hello, kyungik an.

In 1C:Enterprise there is a recommended interface for creating additional functionality. It is named add-in development technology.

Thank you. Now I need to study about the add-in technology.