/**
* 对象名称:floaters
* 对象作用:主要用于产生图片浮动效果
* 使用方法:
* (1)在要加入浮动效果图片的html文件中的标签中加入""
* (2)在标签中加入如下代码:
*
**/
var delta=0.15
var collection;
function floaters() {
this.items = [];
this.addItem = function(id,x,y,content){
document.write(''+content+'
');
var newItem = {};
newItem.object = document.getElementById(id);
newItem.x = x;
newItem.y = y;
this.items[this.items.length] = newItem;
}
this.play = function(){
collection = this.items
setInterval('play()',10);
}
}
function play(){
if(screen.width<=800){
for(var i=0;i0?1:-1)*Math.ceil(Math.abs(dx));
followObj.style.left=followObj.offsetLeft+dx;
}
if(followObj.offsetTop!=(document.documentElement .scrollTop+followObj_y)) {
var dy=(document.documentElement .scrollTop+followObj_y-followObj.offsetTop)*delta;
dy=(dy>0?1:-1)*Math.ceil(Math.abs(dy));
followObj.style.top=followObj.offsetTop+dy;
}
followObj.style.display = '';
}
}