.search {border:1px solid #D4D4D4 !important;border-top-left-radius:5px !important;border-bottom-left-radius:5px !important;background:#EEEEEE !important;color:#9A9A9A !important;height:24px !important;padding-left:5px !important; padding:0; margin:0 !important;}  
.searchbu {background:url(http://fil-ru.moy.su/demo/search-1/submit.png) no-repeat !important;width:31px !important;height:26px !important;border:none !important;cursor: pointer !important;position:absolute !important;margin-left:-10px;}  
.search, input[type="text"]:focus {outline: none;}

<form onsubmit="this.sfSbm.disabled=true" method="get" style="margin:0" action="#">  
<input type="text" name="q" maxlength="30" size="20" class="search">  
<input type="submit" class="searchbu" name="sfSbm" value="">  
</form>