JavaScript实现简单Tip提示框效果

// JavaScript Document
document.write("<div id='tip' style='position:absolute; width: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";
}

<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="imageshttps://img.qb5200.com/download-x/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>