JavaScript : Tip提示框。

// JavaScript Document
document.write("<div id='tip' style='position:absolute; 300px; z-index:1; background-color: #ffffff; border: 1px solid gray; overflow: visible;visibility: hidden;font-size:12px;padding:12px;color:#333333'></div>")

function showtip(w){
var x=event.x;
var y=event.y;
tip.innerHTML=w;
tip.style.visibility="visible";
tip.style.left=x+10;
tip.style.pixelTop=y+document.body.scrollTop+10;

}

function hidetip(){
tip.style.innerHTML=""
tip.style.visibility="hidden";

}

//**********************以上另存为： showtip.js

<table width="100%" border="0" cellspacing="0" cellpadding="0" background="#F7F7F0">
      <tr height="25">
       <td background="images/line-dot.gif" height="20" align="left"><IMG height="5" src="images/dot2.gif" width="5">
        <a
                  onmousemove="showtip('<b>标题：</b><br>毕业女生自信更在包装外<br>')"
                  onmouseout=hidetip()
                 href='Common/NewsDetails.aspx?id=1035'
                  target=_blank>
                  毕业女生自信更在包装外
                  </a>
       </td>
      </tr>
      <tr>
       <td background="images/point_h.gif" height="1"></td>
      </tr>
     </table>

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http://www.rczx.com/js/showtip.js