Postback event does not work in IE10 but works fine in IE11

Hello,

I have a web application developed in VS 2005 .NetFramework 3.5. It is hosted on Windows Server 2000.

I have 2 dropdownlists in a webpage and one of the dropdown is populated based on the selection made in the other dropdown. It works fine in IE 11 and IE versions < 10. It is not woking for IE 10. With the help of developer tools I can find that no events are added to the dropdown.

Please find below part of page source for ddl:

IE11:

<select name="ddl1" id="ddl1" language="javascript" style="width:255px;" onchange="javascript:setTimeout('__doPostBack(\'ddl1\',\'\')',0)">...</select>

IE10:

<select name="ddl1" id="ddl1">...</select>

I'm aware that there is a hot-fix released by Microsoft. The hot-fix describes that it is the issue for both IE10 and IE 11. In my case it is working fine for IE 11. I did install the hot-fix and try. It hasn't worked.

Thanks for your help!

Regards,

Vinay