带背景图片的搜索框的实现

<form name="form1" action="" method="post">
         <table align=center cellpadding=0 cellspacing=0 style="width:255px;height:50px;background:url(images/sousuokuang.png);BACKGROUND-REPEAT: no-repeat ">
         <tr>
         <td><input name="kword" id="kword" placeholder="搜索商品" style="width:190px;background-color:transparent;border:0px " type="text" /></td>
         <td align=left width=40px><img src="images/sousuo.png" οnclick="return search();"></td>
         </tr>
         </table>
  </form>