search button display unnormal

http://run.xxmn.com/new/

the search button on the top of the site displays unnormal under IE8,chrome, which is lower than the search textbox. i want the top of the search button can parallel with the search textbox . but it's ok in IE7,6 and firefox. why? ho开发者_运维百科w to alter it.thankyou

Apply float: left to your search input and button. I'm not sure if it will solve your problem entirely because I can't test it in IE right now.