JS+DIV实现自定义Title的显示方式

自定义的title显示方式一直在华夏用，当你的鼠标悬停在带有提示的链接上时会有自定义的显示内容出现，显示的内容支持html代码，但是这个效果不支持firefox及其他浏览器，最近对之进行了改进，终于兼容了FF，Safari。代码如下：

var qTipTag = "a"; //Which tag do you want to qTip-ize? Keep it lowercase!//
var qTipX = -30; //This is qTip's X offset//
var qTipY = 25; //This is qTip's Y offset//

//There's No need to edit anything below this line//
tooltip = {
name : "qTip",
offsetX : qTipX,
offsetY : qTipY,
tip : null
}

tooltip.init = function () {
var tipNameSpaceURI = " http://www.w3.org/1999/xhtml ";
if(!tipContainerID){ var tipContainerID = "qTip";}
var tipContainer = document.getElementById(tipContainerID);

if(!tipContainer) {
tipContainer = document.createElementNS ? document.createElementNS(tipNameSpaceURI, "div") : document.createElement("div");
tipContainer.setAttribute("id", tipContainerID);
document.getElementsByTagName("body").item(0).appendChild(tipContainer);
}

if (!document.getElementById) return;
this.tip = document.getElementById (this.name);
if (this.tip) document.onmousemove = function (evt) {tooltip.move (evt)};

var a, sTitle;
var anchors = document.getElementsByTagName (qTipTag);

for (var i = 0; i < anchors.length; i ++) {
a = anchors[i];
sTitle = a.getAttribute("title");
if(sTitle) {
a.setAttribute("tiptitle", sTitle);
a.removeAttribute("title");
a.onmouseover = function() {tooltip.show(this.getAttribute('tiptitle'))};
a.onmouseout = function() {tooltip.hide()};
}
}
}

tooltip.move = function (evt) {
var x=0, y=0;
if (document.all) {//IE
x = (document.documentElement && document.documentElement.scrollLeft) ? document.documentElement.scrollLeft : document.body.scrollLeft;
y = (document.documentElement && document.documentElement.scrollTop) ? document.documentElement.scrollTop : document.body.scrollTop;
x += window.event.clientX;
y += window.event.clientY;

} else {//Good Browsers
x = evt.pageX;
y = evt.pageY;
}
this.tip.style.left = (x + this.offsetX) + "px";
this.tip.style.top = (y + this.offsetY) + "px";
}

tooltip.show = function (text) {
if (!this.tip) return;
this.tip.innerHTML = text;
this.tip.style.display = "block";
}

tooltip.hide = function () {
if (!this.tip) return;
this.tip.innerHTML = "";
this.tip.style.display = "none";
}

window.onload = function () {
tooltip.init ();
}

css样式：

/*tip div*/
div#qTip{
border: 1px solid #99CC33;
border-right-width: 2px;
border-bottom-width: 2px;
display: none;
background: #fff;
color: #000;
font: 13px Verdana, Arial, Helvetica, sans-serif;
text-align: left;
position: absolute;
z-index: 1000;
padding: 8px;
}