JavaScript实现图片翻书切换特效源码

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>JS实现图片翻书效果</title>
<META http-equiv=imagetoolbar content=no>
<STYLE type=text/css>
#center {
 LEFT: 50%; POSITION: absolute; TOP: 50%
}
#DHTMLBOOK {
 BACKGROUND: #000; LEFT: -210px; VISIBILITY: hidden; WIDTH: 420px; POSITION: relative; TOP: -160px; HEIGHT: 320px
}
#TXTBOX {
 FONT-SIZE: 0.8em; WIDTH: 410px; COLOR: #aba193; FONT-FAMILY: verdana; POSITION: absolute; TOP: 320px; TEXT-ALIGN: center
}
.page {
 OVERFLOW: hidden; BORDER-LEFT: #000000 1px solid; WIDTH: 50%; CURSOR: pointer; POSITION: absolute; HEIGHT: 100%
}
.right {
 BORDER-RIGHT: #000000 1px solid; LEFT: 50%
}
.turn {
 BACKGROUND: #000000
}
.img {
 WIDTH: 200%; POSITION: absolute; HEIGHT: 100%
}
</STYLE>

<SCRIPT type=text/javascript><!--

document.onselectstart = function () { return false; }

var nI = 0;
var kI = 0;
var run = false;

function setOpacity(obj,o) {
 if (o<0) o=0; else if (o>100) o = 100;
 if (obj.filters)obj.filters.alpha.opacity=o; else obj.style.opacity = o/100;
}
function TPR__(p) {
 P1.style.left = 50-(2.5*p)+"%";
 P1.style.width = (2.5*p)+"%";
 setOpacity(P1i, .5*p*p);
 if (p == 20) run = false;
}
function TPR_(p) {
 P2.style.width = 50-(2.5*p)+"%";
 setOpacity(P2i, 100-.5*(p*p));
 if (p == 20) {
 P2i.src = IMGSRC[kI].src;
 setOpacity(P2i, 100);
 P2.style.width = "50%";
 for(var i=1; i<=20; i++) setTimeout("TPR__("+i+")", i*32);
 }
}
function TPR() {
 if (!run) {
 run = true;
 P01i.src = IMGSRC[kI].src;
 P1.style.width = 0;
 kI++;
 if (kI>=nI) kI = 0;
 titLe(kI);
 P02i.src = IMGSRC[kI].src;
 P1i.src = IMGSRC[kI].src;
 for (var i=1; i<=20; i++) setTimeout("TPR_("+i+")", i*32);
 } else setTimeout("TPR()", 100);
}

function TPL__(p) {
 P2.style.width = (2.5*p)+"%";
 setOpacity(P2i, .5*p*p);
 if (p == 20) run = false;
}
function TPL_(p) {
 P1.style.left = (2.5*p)+"%";
 P1.style.width = 40+(10-2.5*p)+"%";
 setOpacity(P1i, 100-.5*(p*p));
 if (p == 20) {
 P1i.src = IMGSRC[kI].src;
 setOpacity(P1i, 100);
 P1.style.left = 0;
 P1.style.width = "50%";
 for(var i=1; i<=20; i++) setTimeout("TPL__("+i+")", i*32);
 }
}
function TPL() {
 if (!run) {
 run = true;
 P02i.src = IMGSRC[kI].src;
 P2.style.width = 0;
 kI--;
 if (kI < 0) kI = nI-1;
 titLe(kI);
 P01i.src = IMGSRC[kI].src;
 P2i.src = IMGSRC[kI].src;
 for(var i=1; i<=20; i++) setTimeout("TPL_("+i+")", i*32);
 } else setTimeout("TPL()", 100);
}
function titLe(p) {
 document.getElementById("TXTBOX").innerHTML = IMGSRC[p].alt;
}
onload = function() {
 IMGSRC = document.getElementById("imgsrc").getElementsByTagName("img");
 DB = document.getElementById("DHTMLBOOK");
 P01 = DB.getElementsByTagName("span")[0];
 P01i = P01.getElementsByTagName("img")[0];
 P02 = DB.getElementsByTagName("span")[1];
 P02i = P02.getElementsByTagName("img")[0];
 P1 = DB.getElementsByTagName("span")[2];
 P1i = P1.getElementsByTagName("img")[0];
 P2 = DB.getElementsByTagName("span")[3];
 P2i = P2.getElementsByTagName("img")[0];
 nI = IMGSRC.length;
 P1i.src = IMGSRC[kI].src;
 P2i.src = IMGSRC[kI].src;
 titLe(kI);
 DB.style.visibility = "visible";
}
//-->
</SCRIPT>

<META content="MSHTML 6.00.6000.16809" name=GENERATOR></HEAD>
<BODY>

<DIV id=center>
<DIV id=DHTMLBOOK><SPAN class=page onMouseDown="return false;" ondblclick=TPL(); onclick=TPL();><IMG class=img></SPAN>
<SPAN class="page right" onMouseDown="return false;" ondblclick=TPR(); onclick=TPR();><IMG class=img style="LEFT: -100%"></SPAN>
<SPAN class="page turn" onMouseDown="return false;" ondblclick=TPL(); onclick=TPL();><IMG class=img style="FILTER: alpha(); opacity: 1"></SPAN>
<SPAN class="page turn right" onMouseDown="return false;" ondblclick=TPR(); onclick=TPR();><IMG class=img style="FILTER: alpha(); LEFT: -100%; opacity: 1"></SPAN> 
<DIV id=TXTBOX></DIV></DIV></DIV>
<DIV id=imgsrc style="VISIBILITY: hidden">
<IMG alt="JS实现图片翻书效果" src="img/1.jpg">
<IMG alt="JS实现图片翻书效果" src="img/2.jpg">
<IMG alt="JS实现图片翻书效果" src="img/3.jpg"></DIV>

</BODY></HTML>