COMPATIBILITY VIEW SETTING METHOD
for Internet Explorer VER.8.0 and 9.0 user.

You need to do follows process in case of you cannot see down drop display of categories.

You can easily correct indication by changing setting(one click) of the Internet Explorer.
"COMPATIBILITY VIEW".
You click the "the tool" then go to "COMPATIBILITY VIEW", click again.

Now you can see the inside of categories displayed normally.