js文本中搜索关键词输入效果

<table width="1000" height="20" border="0" align="center" cellpadding="0" cellspacing="0"> <tr><form id="SearchForm" name="SearchForm" method="Get" action="Search.asp"> <td width="478" align="right" valign="middle"><input name="KeyWord" type="text" class="searchpannel" value="请输入关键字" onmouseover="this.focus()" onblur="if (this.value =='') this.value='请输入关键字'" onfocus="this.select()" onclick="if (this.value=='请输入关键字') this.value=''"/> <select style="width:120px" name="ChannelID"> <option value="0">搜索类型</option> <option value="1">文章</option> <option value="2">图片</option> <option value="5">商品</option> <option value="111">点评</option> </select> <input type="submit" class="inputButton" name="Submit1" value="站内搜索" />   </td> </form> <td width="522"></td> </tr> </table>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]