我有一段代码是关于控制浮动广告位置,没看懂如何调整,求教~
/******************************************************************************
Crossday Discuz! Board - Floating Advertisements for Discuz!
Copyright 2001-2006 Comsenz Inc. (http://www.comsenz.com)
*******************************************************************************/
var delta=0.15;
var collection;
var closeB=false;
var documentBody = document.documentElement.clientHeight>0 ? document.documentElement : document.body;
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>');
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()',30);
}
}
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);
if(followObj.offsetLeft!=(documentBody.scrollLeft+followObj_x)) {
var dx=(documentBody.scrollLeft+followObj_x-followObj.offsetLeft)*delta;
dx=(dx>0?1:-1)*Math.ceil(Math.abs(dx));
followObj.style.left=(followObj.offsetLeft+dx) + "px";
}
if(followObj.offsetTop!=(documentBody.scrollTop+followObj_y)) {
var dy=(documentBody.scrollTop+followObj_y-followObj.offsetTop)*delta;
dy=(dy>0?1:-1)*Math.ceil(Math.abs(dy));
followObj.style.top=(followObj.offsetTop+dy) + "px";
}
followObj.style.display = 'block';
}
}
function closeBanner()
{
closeB=true;
return;
}
var theFloaters = new floaters();
