javascript代码有关问题 -功能实现漫游的自由浮动层
日期：2014-05-16 浏览次数：20386 次
javascript代码问题 --功能实现漫游的自由浮动层
- HTML code
<html>
<head>
<script language = 'javascript'>
function MM_swapImgRestore()
{
var i, x, a = document.MM_sr;
for(i = 0; a && i<a.length && (x=a[i]) && x.oSrc; i++)
{
x.src = x.oSrc;
}
}
function MM_preloadImages()
{
var d = document;
if(d.images)
{
if(!d.MM_p)
{
d.MM_p = new Array();
}
var i, j = d.MM_p.length, a = MM_preloadImages.arguments;
for(i=0; i<a.length; i++)
{
if(a[i].indexOf("#") != 0)
{
d.MM_p[j] = new Image;
d.MM_p[j++].src = a[i];
}
}
}
}
function MM_swapImage()
{
var i, j = 0, x, a = MM_swapImage.arguments;
document.MM_sr = new Array;
for(i=0; i<(a.length - 2); i += 3)
{
if((x = MM_findObj(a[i])) != null)
{
document.MM_sr[j++] = x;
if(!x.oSrc)
{
x.oSrc = x.src;
}
x.src = a[i+2];
}
}
}
</script>
</head>
<body>
<script language = 'javascript'>
var step = 2;
var delay = 30;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var kon = 0;
var pause = true;
var interval;
var name = navigator.appName;
if(name == "Microsoft Internet Explorer")
{
name = true;
}
else
{
name = false;
}
var xPos = 20;
if(name)
{
var yPos = document.body.clientHeight;
}
else
{
var yPos = window.innerHeight;
}
function changePos()
{
if(name)
{
width = document.body.clientWidth;
height = document.body.clinetHeight;
Hoffset = img.offsetHeight;
Woffset = img.offsetWidth;
img.style.left = xPos + document.body.scrollLeft;
img.style.top = yPos + document.body.scrollTop;
}
else
{
width = window.innerHeight;
height = window.innerWidth;
Hoffset = document.img.clip.height;
Woffset = document.img.clip.width;
document.img.pageY = yPos + window.pageYOffset;
document.img.pageX = xPos + window.pageXOffset;
}
if(yon)
{
yPos = yPos + step;
}
else
{
yPos = yPos - step;
}
if(yPos < 0)
{
yon = 1;
yPos = 0
}
if(yPos >= (height - Hoffset))
{
yon = 0;
yPos = (height - Hoffset);
}
if(xon)
{
xPos = xPos + step;
}
else
{
xPos = xPos - step;
}
if(xPos < 0)
{
xon = 1;
xPos = 0;
}
if(xPos >= (width - Woffset))
{
xon = 0;
xPos = (width - Woffset);
}
}
function start()
{
if(name)
{
document.img.visibility = "visible";
}
else
{
document.img.visibility = "visible";
}
interval = se
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