<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 = setInterval('changePos()', delay);
}
function pauseResume()
{
if(pause)
{
clearInterval(interval);
pause = false;
}
else
{
interval = setInterval('changePos()', delay);
pause = true;
}
}
start();
function stop()
{
clearInterval(interval);
pause = false;
}
</script>
<div id = "img" onMouseOver = "javascript:stop()" onMouseOut = "javascript:start()" style = "position:absolute; width:191px; height:55px; left:119px; top:4px">
<a href = "#" onMouseOut = "MM_swapImgRestore()" onMouseOver = "MM_swapImage('a02', '', 'picture.gif', 1)"></a>
<a href = "#" onMouseOut = "MM_swapImgRestore()" onMouseOver = "MM_swapImage('Image_FL2', '', 'picture.gif', 1)"><img name = "Image_FL2" border = "0" src = "picture.gif" width = "180" height = "60" usemap = "#Image_FL2Map">
<map name = "Image_FL2Map">
<area shape = "rect" coords = "4, -4, 166, 28" href = "http://www.pku.edu.cn" target = "blank">
<area shape = "rect" coords = "6, 29, 164, 55" href = "http://www.tsinghua.edu.cn" target = "blank">
</map>
</a>
</div>
</body>
</html>
-->
javascript代码问题 --功能实现漫游的***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 = setInterval('changePos()', delay);
}
function pauseResume()
{
if(pause)
{
clearInterval(interval);
pause = false;
}
else
{
interval = setInterval('changePos()', delay);
pause = true;
}
}
start();
function stop()
{
clearInterval(interval);
pause = false;
}
</script>
<div id = "img" onMouseOver = "javascript:stop()" onMouseOut = "javascript:start()" style = "position:absolute; width:191px; height:55px; left:119px; top:4px">
<a href = "#" onMouseOut = "MM_swapImgRestore()" onMouseOver = "MM_swapImage('a02', '', 'picture.gif', 1)"></a>
<a href = "#" onMouseOut = "MM_swapImgRestore()" onMouseOver = "MM_swapImage('Image_FL2', '', 'picture.gif', 1)"><img name = "Image_FL2" border = "0" src = "picture.gif" width = "180" height = "60" usemap = "#Image_FL2Map">
<map name = "Image_FL2Map">
<area shape = "rect" coords = "4, -4, 166, 28" href = "http://www.pku.edu.cn" target = "blank">
<area shape = "rect" coords = "6, 29, 164, 55" href = "http://www.tsinghua.edu.cn" target = "blank">
</map>
</a>
</div>
</body>
</html>