鼠标简单跟随提示二

Js代码

function id(s){
return document.getElementById(s);
}
/**
* 鼠标跟随提示
*/
function mouseFollow() {
var e = e ? e : window.event;
var posx = e.clientX;
var posy = e.clientY;
var followDiv = id("followDiv") ? id("followDiv"): document.createElement("div");
followDiv.setAttribute("id","followDiv");
var css = "100px;height:20px;border:1px solid grey;position:absolute;z-index:10000;left:"+posx+";top:"+posy+";";
setCss(followDiv,css);
document.body.appendChild(followDiv);
}
/**
* element:需要获取样式的目标元素;name:样式属性
*/
function getStyle(element, name) {
var computedStyle;
try {
computedStyle = document.defaultView.getComputedStyle(element, 
null);
} catch (e) {
computedStyle = element.currentStyle;
}
if (name != "float") {
return computedStyle[name];
} else {
return computedStyle["cssFloat"] || computedStyle["styleFloat"];
}
}
/**
* element:需要设置样式的目标元素;name:样式属性;value:设置值
*/
function setStyle(element, name, value) {
if (name != "float") {
element.style[name] = value;
} else {
element.style["cssFloat"] = value;
element.style["styleFloat"] = value;
}
}
/**
*
*/
function setCss(obj,css){
obj.setAttribute("style",css);
obj.style.cssText = css;
}