//************首页图片层飘浮************//
var delta = 0.015;
var collection;
var closeB = false;
function floaters() {
    this.items = [];
    this.addItem = function (id, x, y, content) {
        //document.write('<DIV id=' + id + ' style="Z-INDEX: 10; POSITION: absolute; width:80px; height:60px;left:' + (typeof (x) == 'string' ? eval(x) : x) + ';top:' + (typeof (y) == 'string' ? eval(y) : y) + ';">' + content + '</DIV>');
        //修改left:*px;top:*px; 添加px解决了图层加载时自动滑动到指定位置的问题
        document.write('<DIV id=' + id + ' style="Z-INDEX: 10; POSITION: absolute; width:80px; height:60px;left:' + (typeof (x) == 'string' ? eval(x) : x) + 'px;top:' + (typeof (y) == 'string' ? eval(y) : y) + 'px;">' + content + '</DIV>');

        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 || closeB) {
        for (var i = 0; i < collection.length; i++) {
            collection[i].object.style.display = 'none';
        }
        return;
    }
    for (var i = 0; i < collection.length; i++) {
        var followObj = collection[i].object;
        var followObj_x = (typeof (collection[i].x) == 'string' ? eval(collection[i].x) : collection[i].x);
        var followObj_y = (typeof (collection[i].y) == 'string' ? eval(collection[i].y) : collection[i].y);

        var objscrollLeft = document.body.scrollLeft || document.documentElement.scrollLeft;
        if (followObj.offsetLeft != (objscrollLeft + followObj_x)) {
            var dx = (objscrollLeft + followObj_x - followObj.offsetLeft) * delta;
            dx = (dx > 0 ? 1 : -1) * Math.ceil(Math.abs(dx));
            followObj.style.left = followObj.offsetLeft + dx;
        }
        var objscrollTop = document.body.scrollTop || document.documentElement.scrollTop;
        if (followObj.offsetTop != (objscrollTop + followObj_y)) {
            var dy = (objscrollTop + followObj_y - followObj.offsetTop) * delta;
            dy = (dy > 0 ? 1 : -1) * Math.ceil(Math.abs(dy));
            followObj.style.top = followObj.offsetTop + dy;
        }
        //followObj.style.display = '';//注释掉防止添加关闭按钮后又自动显示
    }
}
function closeBanner() {
    closeB = true;
    return;
}