js couplet ads, floating ad encapsulation classes (IE, FF, Opera, Safari, Chrome_advertising code

/*
Couplet ad call
The first parameter is the ID, the second parameter is the picture, the third parameter is the distance between the advertisement and the top,
The fourth parameter represents left and right (true represents left, false represents Right), the fifth parameter is the width of the couplet advertisement
*/
new float_ad("ad_l","" ,50,true,64);
new float_ad("ad_r","",50,false,64);

/*
Floating ad call
The url in the first parameter represents the image URL address of the floating ad (required), link to the page URL, alt image prompt text, width image Width (optional, default 120), height of heihgt image (optional, default 120)
The second parameter represents the initial position of the floating advertisement, which is specified by the parameters left and top
The third parameter represents Floating speed, 0 is static, the smaller it is, the faster the floating speed is .jb51.net",alt:"Notice on Recruiting Volunteers for "2009 China·Dalian International Cherry Festival",width:200,height:200},{left:40,top:160},20);

Copy code The code is as follows:

//核心代码
function $(element){
if(arguments.length>1){
for(var i=0,elements=[],length=arguments.length;ielements.push($(arguments[i]));
return elements;
}
if(typeof element=="string")
return document.getElementById(element);
else
return element;
}
Function.prototype.bind=function(object){
var method=this;
return function(){
method.apply(object,arguments);
}
}
var Class={
create:function(){
return function(){
this.initialize.apply(this,arguments);
}
}
}
Object.extend=function(destination,resource){
for(var property in resource){
destination[property]=resource[property];
}
return destination;
}
//对联广告类
var float_ad=Class.create();
float_ad.prototype={
initialize:function(id,content,top,left,width){
document.write('

' content '

');
this.id=$(id);
this.top=top;
if(!!left){
this.id.style.left="8px";
}else{
this.id.style.left=(document.documentElement.clientWidth-width-8) "px";
window.onresize=function(){
this.id.style.left=(document.documentElement.clientWidth-width-8) "px";
}.bind(this);
}
this.id.style.top=top "px";

this.interId=setInterval(this.scroll.bind(this),20);
},
scroll:function(){
this.stmnStartPoint = parseInt(this.id.style.top, 10);
this.stmnEndPoint =document.documentElement.scrollTop this.top;
if(navigator.userAgent.indexOf("Chrome")>0){
this.stmnEndPoint=document.body.scrollTop this.top;
}
if ( this.stmnStartPoint != this.stmnEndPoint ) {
this.stmnScrollAmount = Math.ceil( Math.abs( this.stmnEndPoint - this.stmnStartPoint ) / 15 );
this.id.style.top = parseInt(this.id.style.top, 10) ( ( this.stmnEndPoint}
}
}
//漂浮广告类
var move_ad=Class.create();
move_ad.prototype={
initialize:function(imgOption,initPosition,delay){
this.imgOptions=Object.extend({url:"",link:"",alt:"",width:120,height:120},imgOption||{});
this.adPosition=Object.extend({left:40,top:120},initPosition||{});
this.delay =delay;
this.step = 1;
this.herizonFlag=true;
this.verticleFlag=true;
this.id="ad_move_sg";
var vHtmlString="

";
document.write(vHtmlString);
this.id=$(this.id);
this.intervalId=setInterval(this.scroll.bind(this),this.delay);
this.id.onmouseover=this.stop.bind(this);
this.id.onmouseout=this.start.bind(this);
},
scroll:function(){
var L=T=0;
var B=document.documentElement.clientHeight-this.id.offsetHeight;
var R=document.documentElement.clientWidth-this.id.offsetWidth;
this.id.style.left=this.adPosition.left document.documentElement.scrollLeft "px";
this.id.style.top=this.adPosition.top document.documentElement.scrollTop "px";
this.adPosition.left =this.adPosition.left this.step*(this.herizonFlag?1:-1);
if (this.adPosition.left < L) { this.herizonFlag = true; this.adPosition.left = L;}
if (this.adPosition.left > R){ this.herizonFlag = false; this.adPosition.left = R;}
this.adPosition.top =this.adPosition.top this.step*(this.verticleFlag?1:-1);
if(this.adPosition.top <= T){ this.verticleFlag=true; this.adPosition.top=T;}
if(this.adPosition.top >= B){ this.verticleFlag=false; this.adPosition.top=B; }
},
stop:function(){
clearInterval(this.intervalId);
},
start:function(){
this.intervalId=setInterval(this.scroll.bind(this),this.delay);
}
}