页面右下角弹出类似QQ或MSN的消息提示

/*    消息构造
*/
function CLASS_MSN_MESSAGE(id,width,height,caption,title,message,target,action){
this.id     = id;
this.title  = title;
this.caption= caption;
this.message= message;
this.target = target;
this.action = action;
this.width    = width?width:200;
this.height = height?height:120;
this.timeout= 150;
this.speed    = 20;
this.step    = 1;
this.right    = screen.width -1;
this.bottom = screen.height;
this.left    = this.right - this.width;
this.top    = this.bottom - this.height;
this.timer    = 0;
this.pause    = false;
this.close    = false;
this.autoHide    = true;
}

/**//*
*    隐藏消息方法
*/
CLASS_MSN_MESSAGE.prototype.hide = function(){
if(this.onunload()){

var offset  = this.height>this.bottom-this.top?this.height:this.bottom-this.top;
var me  = this;

if(this.timer>0){
window.clearInterval(me.timer);
}

var fun = function(){
if(me.pause==false||me.close){
var x  = me.left;
var y  = 0;
var width = me.width;
var height = 0;
if(me.offset>0){
height = me.offset;
}

y  = me.bottom - height;

if(y>=me.bottom){
window.clearInterval(me.timer);
me.Pop.hide();
} else {
me.offset = me.offset - me.step;
}
me.Pop.show(x,y,width,height);
}
}

this.timer = window.setInterval(fun,this.speed)
}
}