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图片的自动和手动切换

2016-03-26 16:26 363 查看

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
*{
margin:0px;
padding:0px;
font-family:"微软雅黑";}

#tuijian{
width:940px;
height:500px;
background-repeat:no-repeat;
margin:auto;
}
.pages{
line-height:500px;
background-color:#000;
background-position:center;
background-repeat:no-repeat;
opacity:0.4;
width:30px;
height:60px;
}
#p1 {
background-image:url(zuo.jpg);
float:left;
margin:180px 0px 0px 10px;}
#p2{
background-image:url(you.jpg);
float:right;
margin:180px 10px 0px 0px;}

</style>
</head>

<body>

<div id="tuijian" style="background-image:url(E8Z311O60R7W.jpg)">
<div class="pages" id="p1" onclick="dodo(-1)"></div>
<div class="pages" id="p2" onclick="dodo(1)"></div>

</div>

</body>
</html>
<script type="text/javascript">
var jpg=new Array();
jpg[0]="url(1212.jpg)";
jpg[1]="url(1213.jpg)";
jpg[2]="url(1214.jpg)";
var tjimg=document.getElementById("tuijian");
var xb=0;
var n=0;
function huan()
{
xb++;
if(xb==jpg.length)
{
xb=0;

}

tjimg.style.backgroundImage=jpg[xb];
if(n==0)
{
var id=window.setTimeout("huan()",3000);
}
}
function dodo(m)
{
n=1;
xb=xb+m;
if(xb<0)
{
xb=jpg.length-1;}
else if(xb>=jpg.length)
{
xb=0;
}
tjimg.style.backgroundImage=jpg[xb];
}
window.setTimeout("huan()",3000);
</script>

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