📄 15.16 循环滚动显示图片.htm
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<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>无标题页</title>
<script language="javascript">
//定义要显示的图片数组
imgArr=new Array()
imgArr[0]="<a href=http://www.google.com/ onmouseMove='javascript:outHover=true' onMouseover='javascript:outHover=true' onMouseout='javascript:outHover=false;mvStart()'><img src=LOGO1.gif border=0></a>"
imgArr[1]="<a href=http://www.baidu.com/ onmouseMove='javascript:outHover=true' onMouseover='javascript:outHover=true' onMouseout='javascript:outHover=false;mvStart()'><img src=LOGO2.gif border=0></a>"
imgArr[2]="<a href=http://www.google.com/ onmouseMove='javascript:outHover=true' onMouseover='javascript:outHover=true' onMouseout='javascript:outHover=false;mvStart()'><img src=LOGO1.gif border=0></a>"
imgArr[3]="<a href=http://www.baidu.com/ onmouseMove='javascript:outHover=true' onMouseover='javascript:outHover=true' onMouseout='javascript:outHover=false;mvStart()'><img src=LOGO2.gif border=0></a>"
imgArr[4]="<a href=http://www.google.com/ onmouseMove='javascript:outHover=true' onMouseover='javascript:outHover=true' onMouseout='javascript:outHover=false;mvStart()'><img src=LOGO1.gif border=0></a>"
//内部变量
var moveStep=4; //步长，单位：pixel
var moveRelax=100; //移动时间间隔，单位：ms
ns4=(document.layers)?true:false;
var displayImgAmount=4 ; //视区窗口可显示个数
var divWidth=220; //每块图片占位宽
var divHeight=145; //每块图片占位高
var startDnum=0;
var nextDnum=startDnum+displayImgAmount;
var timeID;
var outHover=false;
var startDivClipLeft;
var nextDivClipRight;
//初始化层
function initDivPlace()
{
if (ns4)
{
for (i=0;i<displayImgAmount;i++){
eval("document.divOuter.document.divAds"+i+".left="+divWidth*i)
}
for (i=displayImgAmount;i<imgArr.length;i++){
eval("document.divOuter.document.divAds"+i+".left="+divWidth*displayImgAmount)
}
}else{
for (i=0;i<displayImgAmount;i++){
eval("document.all.divAds"+i+".style.left="+divWidth*i)
}
for (i=displayImgAmount;i<imgArr.length;i++){
eval("document.all.divAds"+i+".style.left="+divWidth*displayImgAmount)
}
}
}
//设置定时器移动图片
function mvStart(){
timeID=setTimeout(moveLeftDiv,moveRelax)
}
//清除定时器，停止移动
function mvStop(){
clearTimeout(timeID)
}
function moveLeftDiv(){
if (ns4){
for (i=0;i<=displayImgAmount;i++){
eval("document.divOuter.document.divAds"+parseInt((startDnum+i)%imgArr.length)+".left=document.divOuter.document.divAds"+parseInt((startDnum+i)%imgArr.length)+".left-moveStep")
}
startDivClipLeft=parseInt(eval("document.divOuter.document.divAds"+startDnum+".clip.left"))
nextDivClipRight=parseInt(eval("document.divOuter.document.divAds"+nextDnum+".clip.right"))
if (startDivClipLeft+moveStep>divWidth){
eval("document.divOuter.document.divAds"+nextDnum+".clip.right="+divWidth)
eval("document.divOuter.document.divAds"+startDnum+".left="+divWidth*displayImgAmount)
eval("document.divOuter.document.divAds"+parseInt((nextDnum+1)%imgArr.length)+".left=document.divOuter.document.divAds"+nextDnum+".left+"+divWidth)
eval("document.divOuter.document.divAds"+parseInt((nextDnum+1)%imgArr.length)+".clip.left=0")
startDnum=(++startDnum)%imgArr.length
nextDnum=(startDnum+displayImgAmount)%imgArr.length
startDivClipLeft=moveStep-(divWidth-startDivClipLeft)
nextDivClipRight=moveStep-(divWidth-nextDivClipRight)
}else{
eval("document.divOuter.document.divAds"+nextDnum+".clip.left=0")
startDivClipLeft+=moveStep
nextDivClipRight+=moveStep
}
eval("document.divOuter.document.divAds"+startDnum+".clip.left="+startDivClipLeft)
eval("document.divOuter.document.divAds"+nextDnum+".clip.right="+nextDivClipRight)
}else{
for (i=0;i<=displayImgAmount;i++){
eval("document.all.divAds"+parseInt((startDnum+i)%imgArr.length)+".style.left=document.all.divAds"+parseInt((startDnum+i)%imgArr.length)+".style.pixelLeft-moveStep")
}
startDivClipLeft=parseInt(eval("document.all.divAds"+startDnum+".currentStyle.clipLeft"))
nextDivClipRight=parseInt(eval("document.all.divAds"+nextDnum+".currentStyle.clipRight"))
if (startDivClipLeft+moveStep>divWidth){
eval("document.all.divAds"+nextDnum+".style.clip='rect(0,"+divWidth+","+divHeight+",0"+")'")
eval("document.all.divAds"+startDnum+".style.left="+divWidth*displayImgAmount)
eval("document.all.divAds"+parseInt((nextDnum+1)%imgArr.length)+".style.left=document.all.divAds"+nextDnum+".style.pixelLeft+"+divWidth)
startDnum=(++startDnum)%imgArr.length
nextDnum=(startDnum+displayImgAmount)%imgArr.length
startDivClipLeft=moveStep-(divWidth-startDivClipLeft)
nextDivClipRight=moveStep-(divWidth-nextDivClipRight)
}else{
startDivClipLeft+=moveStep
nextDivClipRight+=moveStep
}
eval("document.all.divAds"+startDnum+".style.clip='rect(0,"+divWidth+","+divHeight+","+startDivClipLeft+")'")
eval("document.all.divAds"+nextDnum+".style.clip='rect(0,"+nextDivClipRight+","+divHeight+",0)'")
}
if (outHover){
mvStop()
}else{
mvStart()
}
}
//定义显示图片的层
function writeDivs(){
if (ns4){
document.write("<ilayer name=divOuter width=750 height="+divHeight+">")
for (i=0;i<imgArr.length;i++){
document.write("<layer name=divAds"+i+">")
document.write(imgArr[i]+" ")
document.write("</layer>")
}
document.write("</ilayer>")
document.close()
for (i=displayImgAmount;i<imgArr.length;i++){
eval("document.divOuter.document.divAds"+i+".clip.right=0")
}
}else{
document.write("<div id=divOuter style='position:relative' width=750 height="+divHeight+">")
for (i=0;i<imgArr.length;i++){
document.write("<div id=divAds"+i+" style='position:absolute;clip:rect(0,"+divWidth+","+divHeight+",0)'>")
document.write(imgArr[i]+" ")
document.write("</div>")
}
document.write("</div>")
for (i=displayImgAmount;i<imgArr.length;i++){
eval("document.all.divAds"+i+".style.clip='rect(0,0,"+divHeight+",0)'")
}
}
}
writeDivs();
initDivPlace();
</script>
</head>
<body onload="mvStart()">
<p>
调试其他进程的能力赋予您极广泛的权力，这是无法通过其他途经获得的，在进行远程调试时更是如此。恶意的调试器可能对正在调试的计算机造成大范围的损害。因此，对可能进行调试的人要有所限制。有关更多信息，请参见<a
>远程调试权限</a>。</p>
<p>
但是，许多开发人员没有意识到安全威胁也可以从相反的方向产生。调试对象进程中的恶意代码可能危害调试计算机的安全：有许多必须防范的不道德的安全利用。</p>
<h1 >
安全性最佳做法</h1>
</body>
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