function checkforminfo(){
  if (document.frm_searchinfo.kwd.value==""){
      alert("ÇëÊäÈë¹Ø¼ü×Ö!");
      document.frm_searchinfo.kwd.focus();
      return false;
      }
  else
      return true;
}
document.write ('<table width=150 height=20 align=left border=0><form name="frm_searchinfo" action="/product/search.dll" method="post" onSubmit="javascript:return checkforminfo();"><tr><td></font>&nbsp;&nbsp;<input name=kwd class=box style="width:100px;"><input name=yhy type=hidden></td><td><input name=submit src=/images/mo_14.gif type=image></td></tr></form></table>');