鼠标经过文字链接时出现漂亮的提示层

引用js文件：

/***********************************************

* Cool DHTML tooltip script II- © Dynamic Drive DHTML code library (www.dynamicdrive.com)

* This notice MUST stay intact for legal use

* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code

***********************************************/

var offsetfromcursorX=12 //Customize x offset of tooltip

var offsetfromcursorY=10 //Customize y offset of tooltip

var offsetdivfrompointerX=10 //Customize x offset of tooltip DIV relative to pointer image

var offsetdivfrompointerY=14 //Customize y offset of tooltip DIV relative to pointer image. Tip: Set it to (height_of_pointer_image-1).

document.write('<div id="dhtmltooltip"></div>') //write out tooltip DIV

document.write('<img id="dhtmlpointer" src="images/arrow_tip.gif">') //write out pointer image

var ie=document.all

var ns6=document.getElementById && !document.all

var enabletip=false

if (ie||ns6)

var tipobj=document.all? document.all["dhtmltooltip"] : document.getElementById? document.getElementById("dhtmltooltip") : ""

var pointerobj=document.all? document.all["dhtmlpointer"] : document.getElementById? document.getElementById("dhtmlpointer") : ""

function ietruebody(){

return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body

}

function ddrivetip(thetext, thewidth, thecolor){

if (ns6||ie){

if (typeof thewidth!="undefined") tipobj.style.width=thewidth+"px"

if (typeof thecolor!="undefined" && thecolor!="") tipobj.style.backgroundColor=thecolor

tipobj.innerHTML=thetext

enabletip=true

return false

}

}

function positiontip(e){

if (enabletip){

var nondefaultpos=false

var curX=(ns6)?e.pageX : event.clientX+ietruebody().scrollLeft;

var curY=(ns6)?e.pageY : event.clientY+ietruebody().scrollTop;

//Find out how close the mouse is to the corner of the window

var winwidth=ie&&!window.opera? ietruebody().clientWidth : window.innerWidth-20

var winheight=ie&&!window.opera? ietruebody().clientHeight : window.innerHeight-20

var rightedge=ie&&!window.opera? winwidth-event.clientX-offsetfromcursorX : winwidth-e.clientX-offsetfromcursorX

var bottomedge=ie&&!window.opera? winheight-event.clientY-offsetfromcursorY : winheight-e.clientY-offsetfromcursorY

var leftedge=(offsetfromcursorX<0)? offsetfromcursorX*(-1) : -1000

//if the horizontal distance isn't enough to accomodate the width of the context menu

if (rightedge<tipobj.offsetWidth){

//move the horizontal position of the menu to the left by it's width

tipobj.style.left=curX-tipobj.offsetWidth+"px"

nondefaultpos=true

}

else if (curX<leftedge)

tipobj.style.left="5px"

else{

//position the horizontal position of the menu where the mouse is positioned

tipobj.style.left=curX+offsetfromcursorX-offsetdivfrompointerX+"px"

pointerobj.style.left=curX+offsetfromcursorX+"px"

}

//same concept with the vertical position

if (bottomedge<tipobj.offsetHeight){

tipobj.style.top=curY-tipobj.offsetHeight-offsetfromcursorY+"px"

nondefaultpos=true

}

else{

tipobj.style.top=curY+offsetfromcursorY+offsetdivfrompointerY+"px"

pointerobj.style.top=curY+offsetfromcursorY+"px"

}

tipobj.style.visibility="visible"

if (!nondefaultpos)

pointerobj.style.visibility="visible"

else

pointerobj.style.visibility="hidden"

}

}

function hideddrivetip(){

if (ns6||ie){

enabletip=false

tipobj.style.visibility="hidden"

pointerobj.style.visibility="hidden"

tipobj.style.left="-1000px"

tipobj.style.backgroundColor=''

tipobj.style.width=''

}

}

document.onmousemove=positiontip

使用：

<asp:Repeater runat="server" ID="rptQQList" EnableViewState="false">

<ItemTemplate>

<li>

<span onmouseover="ddrivetip('<%# Eval("areaCoverage") %>',180)" onmouseout="hideddrivetip()"><%#Eval("area")%></span>： <a target="_blank" href="tencent://message/?uin=<%#Eval("qq")%>&Site=www.huiduo.net.cn&Menu=yes">

<img border="0" src="http://wpa.qq.com/pa?p=1:<%#Eval("qq")%>:1" alt="点击这里给我发消息" /></a>

<br /><span style="margin-right:2px;"><img src="images/mobile.gif" alt="" /><%#Eval("mobile") %></span>

</li>

</ItemTemplate>

</asp:Repeater>