鼠标移动很棒的跟踪效果
<!-- 要实现此效果需要 2 个步骤： -->
<!-- 第 1 步： -->
<!-- 把下面的代码加到<HEAD></HEAD>区域中： -->
<style type="text/css">
BODY {overflow: scroll; overflow-x: hidden;}
</style>
<!-- 第 2 步： -->
<!-- 把下面的代码加到<BODY></BODY>区域中： -->
><script language="Javascript1.2">
<!--
var trailLength = 8
var path = "/Article/UploadPic/2005-10/200510875420658.gif"
var isIE = false,isNav = false,range = "all.",style = ".style",i,d = 0
var topPix = ".pixelTop",leftPix = ".pixelLeft",images,storage
if (document.layers) {
isNav = true,range = "layers.",style = "",topPix = ".top",leftPix = ".left"
} else if (document.all) {
isIE = true
}
function initTrail() { // prepares the script
images = new Array() // prepare the image array
for (i = 0; i < parseInt(trailLength); i++) {
images[i] = new Image()
images[i].src = path
}
storage = new Array() // prepare the storage for the coordinates
for (i = 0; i < images.length*3; i++) {
storage[i] = 0
}
for (i = 0; i < images.length; i++) { // make divs for IE and layers for Navigator
(isIE) ? document.write('<div id="obj' + i + '" style="position: absolute; z-Index: 100; height: 0; width: 0"><img src="' + images[i].src + '"></div>') : document.write('<layer name="obj' + i + '" width="0" height="0" z-index="100"><img src="' + images[i].src + '"></layer>')
}
trail()
}
function trail() { // trailing function
for (i = 0; i < images.length; i++) { // for every div/layer
eval("document." + range + "obj" + i + style + topPix + "=" + storage[d]) // the Y-coordinate
eval("document." + range + "obj" + i + style + leftPix + "=" + storage[d+1]) // the X-coordinate
d = d+2
}
for (i = storage.length; i >= 2; i--) { // save the coordinate for the div/layer that's behind
storage[i] = storage[i-2]
}
d = 0 // reset for future use
var timer = setTimeout("trail()",10) // call recursively
}
function processEvent(e) { // catches and processes the mousemove event
if (isIE) { // for IE
storage[0] = window.event.y+document.body.scrollTop+10
storage[1] = window.event.x+document.body.scrollLeft+10
} else { // for Navigator
storage[0] = e.pageY+12
storage[1] = e.pageX+12
}
}
if (isNav) {
document.captureEvents(Event.MOUSEMOVE) // Defines what events to capture for Navigator
}
if (isIE || isNav) { // initiates the script
initTrail()
document.onmousemove = processEvent // start capturing
}
//-->
</script>
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