function checkforminfox()
{
if (document.Search.keyword.value=="")
{
alert("请输入关键字!");
document.Search.keyword.focus();
return false;
}
else
return true;
}
document.write ("<style type='text/css'>.search { border: 1px solid #c0c0c0; padding: 1px; background-color: #ffffff; height: 20px;}</style><table width='100%' border='0' cellpadding='0' cellspacing='0'><form name=Search action='/Common/search.asp' method=get onsubmit='return checkforminfox();'><tr><td>关键字：</td><td><input type=text name=keyword onFocus=this.value='' value='' size=13 maxlength=20 title='多个关键字请用 空格 格开' class=search></td></tr><tr><td></td><td><select name=sea_type><option value='yellowpage'>企业</option></select><input type=submit class=search value='搜 索'></td></tr></form></table>");