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图片上下左右拉伸效果特效

2011-05-30 图片特效 ℃

脚本说明:
第一步：把如下代码加入<body>区域中
<script language="JavaScript" type="text/javascript">

<!--hide

//STEP 1: PUT THIS CODE INTO THE HEAD OF YOUR DOCUMENT

var wdmax=120;          //set maximum width of square image (px)

var wdmin=0;            //set minimum thickness of edge-on image (px)

var inc=5;              //set step change in px (wdmax-wdmin must be a multiple) )These two variables

var rate = 50;          //pause between steps (in millisec)                      )determine flip-flop speed

var pause = 1000;       //pause between flip and flop (in millisec)

var ff="flip";          //initialise whether movement starts with a "flip" (sideways) or "flop" (vertical) change.

function flipflop() {

if (ff=="flip") {

var wd = document.getElementById("pic").getAttribute("width");

wd = wd - inc;

document.getElementById("pic").setAttribute("width",wd);

if (wd==wdmin) {

document.getElementById("pic").setAttribute("src","pic2.gif"); //substitute name of your second picture

inc=-inc;

}

if (wd==wdmax) {

ff="flop";

inc=-inc;

setTimeout("flipflop()",pause);

}

else {

setTimeout("flipflop()",rate);

}

else {

var ht = document.getElementById("pic").getAttribute("height");

ht = ht - inc;

document.getElementById("pic").setAttribute("height",ht);

if (ht==wdmin) {

document.getElementById("pic").setAttribute("src","pic1.gif"); //substitute name of your first picture

inc=-inc;

}

if (ht==wdmax) {

ff="flip";

inc=-inc;

setTimeout("flipflop()",pause);

}

else {

setTimeout("flipflop()",rate);

}

-->

</script>
<center>

</th></TABLE>

第二步：把<body>中的内容改为：
<body  onLoad="javascript:flipflop()">

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