<!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" lang="gb2312">
<head>
<title>搜狐女人頻道首頁(yè)的JS圖片切換效果</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<style type="text/css">
* { margin:0; padding:0; }
body {
margin:0;
color:#88c; background:#333;
}
img { margin:0; padding:0; border:0; }
#js_F {
position:relative;
top:10px; left:10px;
overflow:hidden;
width:395px; height:185px;
background:#33c;
}
.div_img {
position:absolute; top:0;
width:295px; height:185px;
cursor:pointer;
}
#div_img_0 { z-index:5; left:0; }
#div_img_1 { z-index:4; left:25px; }
#div_img_2 { z-index:3; left:50px; }
#div_img_3 { z-index:2; left:75px; }
#div_img_4 { z-index:1; left:100px; }
</style>
</head>
<body>
<div id="js_F">
<div id="div_img_0" class="div_img"><a href="#"><img src="http://www.lmwq.com.cn/imglist/01.jpg" /></a><img src="http://www.lmwq.com.cn/i/bg_showimg.gif" onmouseover="jsf_mmove(0)" /></div>
<div id="div_img_1" class="div_img"><a href="#"><img src="http://www.lmwq.com.cn/imglist/02.jpg" /></a><img src="http://www.lmwq.com.cn/i/bg_showimg.gif" onmouseover="jsf_mmove(1)" /></div>
<div id="div_img_2" class="div_img"><a href="#"><img src="http://www.lmwq.com.cn/imglist/03.jpg" /></a><img src="http://www.lmwq.com.cn/i/bg_showimg.gif" onmouseover="jsf_mmove(2)" /></div>
<div id="div_img_3" class="div_img"><a href="#"><img src="http://www.lmwq.com.cn/imglist/04.jpg" /></a><img src="http://www.lmwq.com.cn/i/bg_showimg.gif" onmouseover="jsf_mmove(3)" /></div>
<div id="div_img_4" class="div_img"><a href="#"><img src="http://www.lmwq.com.cn/imglist/05.jpg" /></a><img src="http://www.lmwq.com.cn/i/bg_showimg.gif" onmouseover="jsf_mmove(4)" /></div>
</div>
<script type="text/javascript">
<!--///*--><![CDATA[/*><!--*/
var div_imgs = document.getElementById("js_F").getElementsByTagName("div");
var imgLeft = [0, 25, 50, 75, 100]; //5個(gè)圖片的初始left值
var imgWidth = 270; //圖片的寬度
var atf = [true, true, true, true, true]; //5個(gè)圖片的位置：true為右邊，false為左邊
var speed1 = 10, speed2 = 2000, mo = 15; //速度
var sTo;
function jsf_move(n){
clearTimeout(sTo);
var thisL; //圖片left值
if (atf[n]) { //要移動(dòng)的圖片在右邊
//需移動(dòng)的圖片（包括該圖片左邊的所有圖片）向左邊移動(dòng))
for (var i=0; i<=n; i++) { //當(dāng)前值-(圖片寬度-(當(dāng)前值-初始值))/速度
thisL = parseInt(getStyle(div_imgs[i],"left"));
div_imgs[i].style.left = thisL - Math.ceil((imgWidth-(imgLeft[i]-thisL))/mo) + "px";
if (i<n) atf[i] = false; //更改圖片的位置狀態(tài)
}
} else { //要移動(dòng)的圖片在左邊
//需移動(dòng)的圖片（包括該圖片右邊的所有圖片）向右邊移動(dòng))
for (var i=4; i>=n; i--) { //當(dāng)前值+(當(dāng)前值-初始值)/速度
thisL = parseInt(getStyle(div_imgs[i],"left"));
div_imgs[i].style.left = thisL + Math.ceil(Math.abs(thisL-imgLeft[i])/mo) + "px";
if (i>n) atf[i] = true; //更改圖片的位置狀態(tài)
}
}
thisL = parseInt(getStyle(div_imgs[n],"left"));
if ((atf[n] && thisL>(imgLeft[n]-imgWidth)) || (!atf[n] && thisL<imgLeft[n])) {
//當(dāng)前圖片移動(dòng)未結(jié)束，繼續(xù)移動(dòng)當(dāng)前圖片
sTo = setTimeout(function(){jsf_move(n);}, speed1);
} else {
//當(dāng)前圖片移動(dòng)結(jié)束，準(zhǔn)備移動(dòng)下一張圖片
if (n>=3 && atf[n]) {
atf[n] = false;
sTo = setTimeout(function(){jsf_move(n);}, speed2);
} else if (n==0 && !atf[n]) {
atf[n] = true;
sTo = setTimeout(function(){jsf_move(n);}, speed2);
} else if (atf[n]){
atf[n] = false;
sTo = setTimeout(function(){jsf_move(++n);}, speed2);
} else {
sTo = setTimeout(function(){jsf_move(--n);}, speed2);
}
}
}
//判斷圖片的位置
function jsf_mmove(n){
clearTimeout(sTo);
switch (n){
case 0 :
atf[0] = false;
jsf_move(0);
break;
case 1 :
case 2 :
case 3 :
if (atf[n-1]) {
sTo = setTimeout(function(){jsf_move(n-1);}, speed1);
} else if (atf[n]) {
atf[n-1] = true;
sTo = setTimeout(function(){jsf_move(n-1);}, speed1);
} else {
sTo = setTimeout(function(){jsf_move(n);}, speed1);
}
break;
case 4 :
atf = [false, false, false, true, true];
jsf_move(3);
break;
}
}
window.onload = function(){
sTo = setTimeout("jsf_move(0)",speed2);
}
function getStyle( elem, name ) {
if (elem.style[name]) { return elem.style[name]; }
else if (elem.currentStyle) { return elem.currentStyle[name]; }
else if (document.defaultView && document.defaultView.getComputedStyle) {
name = name.replace(/([A-Z])/g,"-$1");
name = name.toLowerCase();
var s = document.defaultView.getComputedStyle(elem,"");
return s && s.getPropertyValue(name);
}
else { return null; }
}
/*]]>*///-->
</script>
</body>
</html>
