<style type="text/css">
.out_div{
background:url('http://img.my.csdn.net/uploads/201211/14/1352861780_4765.png') no-repeat scroll 0 0 transparent;
display:inline;
height:20px;
width:180px;
}
.text1{
background:none repeat scroll 0 0 transparent;
border:medium none;
width:160px;
}
.submit1{
background:none repeat scroll 0 0 transparent;
border:medium none;
cursor:pointer;
width: 15px;
}
</style>
<div class="out_div">
<input class="text1" type="text" /><input class="submit1" type="submit" value=""/>
</div>