Broswer Compatibility Issue – PLEASE HELP!!!!

I really need help…

I have created my first site and put alot of time into it and I’m confuse I have tested the site on my browsers

IE9
Chrome 19.0.1084.56 m
Firefox 13.0

My layout all works for me

I’m getting feedback on family and friends who have been lookin at my site for constructive criticism and feedback that the buttons on my menu are not working properly…

They are either half showing and then when clicked on half disappear etc..
I’m waiting for a response with what browser they are using

But I really would like to get some help from an experienced person out there to let me know the best thing to do when it come to my website.

Has it got anything to do with the size of the graphics etc? or the way I have done my CSS coding for the rollover buttons??

any help would be greatly appreciated.

I’m sorry that I’m a beginner but I have tried to learn what I can and watched hundreds of youtube videos and website tutorials… so I’m not sure where I am going wrong.

Website is http://www.kizzieskorner.com

PLEASE HELP!!!