your #top-logo is floating; and the site menu is floating up against it. IE is clearing it (for some reason), but other browsers won't do so unless you tell them to. Try adding
Code:
#menu-container{ clear: both; }
to your css.
For future information, you will have a much easier time if you code for "good" browsers first, and then look into all the various hacks that Internet Explorer will require... 
LMK if this doesn't solve your problem.
Edit:

Originally Posted by
shahji.shakil
but when i open website in (IE 10)...
There is no IE 10 (9 is the most current version). I assume you meant to refer to some other browser.
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