📄 10-1.htm

📁 JScript网页特效,包含很多的实现网页特效的方法.

💻 HTM

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<html>
<head>
<title>§10.1 自动定时切换背景图片</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>

<body bgcolor="#FFFFFF">
<script language=javascript>

var backgroundimage=new Array("001.jpg","002.jpg","003.jpg")
var swapspeed=2
var timer
var imgpreload=new Array()
if (document.all) 
{
    for (i=0;i<=backgroundimage.length-1;i++) 
    {
	    imgpreload[i]=new Image()
	    imgpreload[i].src=backgroundimage[i]
    }
}

var i_backgroundimage=0

swapspeed=swapspeed*1000

function swapimages() 
{
	if (document.all)
	{
          window.status=i_backgroundimage
          document.body.background=backgroundimage[i_backgroundimage]
          i_backgroundimage++
          if (i_backgroundimage>=backgroundimage.length)
          {
            i_backgroundimage=0
          }
	  timer=setTimeout("swapimages()",swapspeed)	
	}
}
window.onload=swapimages

</script>
</body>
</html>

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