如何在alt或title=里显示图片和文字等信息

效果就是鼠标移上去时，alt或title的框内可以显示图片和文字等信息
具体图片请看：http://photo.bokee.com/photoblog/SinglePhotoCtrl?imgid=9886728这样的效果该如何实现，请指教，谢谢

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没有打开.应该是用 mouseover 事件来完成的.
<html>
<head>
  <script language="javascript">
var tipTimer;
function locateObject(n, d) { //v3.0
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=locateObject(n,d.layers[i].document); return x;
}function hideTooltip(object)
{
if (document.all)
{
locateObject(object).style.visibility="hidden"
locateObject(object).style.left = 1;
locateObject(object).style.top = 1;
return false
}
else if (document.layers)
{
locateObject(object).visibility="hide"
locateObject(object).left = 1;
locateObject(object).top = 1;
return false
}
else
return true
}function showTooltip(object,e, tipContent, backcolor, bordercolor, textcolor, displaytime)
{
window.clearTimeout(tipTimer)if (document.all)
{
locateObject(object).style.top=document.body.scrollTop+event.clientY+20locateObject(object).innerHTML='<table style="font-family: Verdana,Tahoma, Arial, Helvetica, sans-serif; font-size: 11px; border: '+bordercolor+'; border-style: solid; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; background-color: '+backcolor+'" width="10" border="0" cellspacing="1" cellpadding="1"><tr><td nowrap><font style="font-family: Verdana,Tahoma, Arial, Helvetica, sans-serif; font-size: 11px; color: '+textcolor+'">'+unescape(tipContent)+'</font></td></tr></table> 'if ((e.x + locateObject(object).clientWidth) > (document.body.clientWidth + document.body.scrollLeft))
{
locateObject(object).style.left = (document.body.clientWidth + document.body.scrollLeft) - locateObject(object).clientWidth-10;
}
else
{
locateObject(object).style.left=document.body.scrollLeft+event.clientX
}
locateObject(object).style.visibility="visible"
tipTimer=window.setTimeout("hideTooltip('"+object+"')", displaytime);
return true;
}
else if (document.layers)
{
locateObject(object).document.write('<table width="10" border="0" cellspacing="1" cellpadding="1"><tr bgcolor="'+bordercolor+'"><td><table width="10" border="0" cellspacing="0" cellpadding="2"><tr bgcolor="'+backcolor+'"><td nowrap><font style="font-family: Verdana,Tahoma, Arial, Helvetica, sans-serif; font-size: 11px; color: '+textcolor+'">'+unescape(tipContent)+'</font></td></tr></table></td></tr></table>')
locateObject(object).document.close()
locateObject(object).top=e.y+20if ((e.x + locateObject(object).clip.width) > (window.pageXOffset + window.innerWidth))
{
locateObject(object).left = window.innerWidth - locateObject(object).clip.width-10;
}
else
{
locateObject(object).left=e.x;
}
locateObject(object).visibility="show"
tipTimer=window.setTimeout("hideTooltip('"+object+"')", displaytime);
return true;
}
else
{
return true;
}
}
</script>
  </head>
  <body>
<div id="dHTMLToolTip" style="position: absolute; visibility: hidden; width:10; height: 10; z-index: 1000; left: 0; top: 0"></div>
<span onMouseOver="showTooltip('dHTMLToolTip',event, '文字提示信息部分<br>大家号啊。。<img src = 1.jpg height=120>', '#fffff2','#000000','#000000','20000')" onMouseOut="hideTooltip('dHTMLToolTip')">dfsafsdafsdafasf</span>
</body>
<html>
通常都是用 div 实现滴，alt 和 title 通常只显示纯文本！
事件：onMouseOver,onMouseOut
如LS所说，最好用Div,onMouseOver时show,传入要显示的内容
onMouseOut时hidden
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style type="text/css">
*{list-style:none}
#div1{position:absolute;width:200px; height:200px; background:blue; z-index:2;}
ul{position:relative; top:200px; left:300px;}
li{width:100px; height:100px; border:1px #eee solid; background:red; float:left;}
</style>
</head><body>
<div id="div1"></div>
<div><ul><li>要显示的字</li><li>xxx</li></ul></div>
</body>
</html>
<script type="text/javascript">var li0 = document.getElementsByTagName("li")[0];var div1 = document.getElementById("div1");li0.onmouseover = change1;var x  = (pageX(li0) + fullHeight(li0) / 2);
var y  = (pageY(li0) + fullWidth(li0) / 2);
div1.style.display = "none";
function change1(){setTimeout(function(){ div1.style.width = "200px";
div1.style.height = "200px";setX(div1, x);
setY(div1,y);slideDownFadeIn(div1);
},100);div1.innerHTML = li0.innerHTML;
}
/******/
function getStyle( elem, name ) {
    if (elem.style[name])
        return elem.style[name];
    else if (elem.currentStyle)
        return elem.currentStyle[name];
    else if (document.defaultView && document.defaultView.getComputedStyle) {
        name = name.replace(/([A-Z])/g,"-$1");
        name = name.toLowerCase();
        var s = document.defaultView.getComputedStyle(elem,"");
        return s && s.getPropertyValue(name);
    } else
    return null;
}
function fullHeight( elem ) {
    if ( getStyle( elem, 'display' ) != 'none' )
        return elem.offsetHeight || getHeight( elem );
    var old = resetCSS( elem, {
        display: '',
        visibility: 'hidden',
        position: 'absolute'
        });
    var h = elem.clientHeight || getHeight( elem );
    restoreCSS( elem, old );
    return h;
}function fullWidth( elem ) {
    if ( getStyle( elem, 'display' ) != 'none' )
        return elem.offsetWidth || getWidth( elem );
    var old = resetCSS( elem, {
        display: '',
        visibility: 'hidden',
        position: 'absolute'
    });
    var w = elem.clientWidth || getWidth( elem );
    restoreCSS( elem, old );
    return w;
}function resetCSS( elem, prop ) {
    var old = {};
    for ( var i in prop ) {
        old[ i ] = elem.style[ i ];
        elem.style[ i ] = prop[i];
    }
    return old;
}function restoreCSS( elem, prop ) {
    for ( var i in prop )
        elem.style[ i ] = prop[ i ];
}
function setX(elem, pos) {    elem.style.left = pos + "px";
}function setY(elem, pos) {    elem.style.top = pos + "px";
}
function pageX(elem) {
    return elem.offsetParent ?
        elem.offsetLeft + pageX( elem.offsetParent ) :
        elem.offsetLeft;
}function pageY(elem) {
    return elem.offsetParent ?
        elem.offsetTop + pageY( elem.offsetParent ) :
        elem.offsetTop;
}
function show( elem ) {
    elem.style.display = elem.$oldDisplay || '';
}
function setOpacity( elem, level ) {
    if ( elem.filters )
        elem.style.filter = 'alpha(opacity=' + level + ')';
    else
        elem.style.opacity = level / 100;
}
function slideDownFadeIn(elem) {
var h = fullHeight( elem );
var w = fullWidth (elem);
    elem.style.height = '0px';
elem.style.width = '0px';
setOpacity(elem,0);
    show( elem );
    for ( var i = 0; i <= 100; i += 5 ) {
        (function(){
            var pos = i;
            setTimeout(function(){
elem.style.width = ( pos / 100 ) * h  + "px";
                elem.style.height = ( pos / 100 ) * h  + "px";
setOpacity(elem,pos);
                }, ( pos + 1 ) * 10 );
        })();
    }
}
</script>---
onmouseover事件引发弹出层,并把内容显示在弹出层里