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缩略图响应鼠标滑过图片切换

<!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=gb2312">

<title>带缩略图响应鼠标滑过图片切换</title>

<style type="text/css">

* { margin:0; padding:0; word-break:break-all; }

body {

font:12px/1.6em Helvetica, Arial, sans-serif;

margin: 0px;

}

h1, h2, h3, h4, h5, h6 { font-size:1em; }

a { color:#0287CA; text-decoration:none; }

a:hover { text-decoration:underline; }

ul, li { list-style:none; }

fieldset, img { border:none; }

legend { display:none; }

em, strong, cite, th { font-style:normal; font-weight:normal; }

input, textarea, select, button { font:12px Helvetica, Arial, sans-serif; }

table { border-collapse:collapse; }

html { overflow:-moz-scrollbars-vertical; }

#ifocus { width:650px; height:245px; margin:0px; border:1px solid #DEDEDE; background:#F8F8F8; }

#ifocus_pic { display:inline; position:relative; float:left; width:540px; height:225px; overflow:hidden; margin:10px 0 0 10px; }

#ifocus_piclist { position:absolute; }

#ifocus_piclist li { width:550px; height:225px; overflow:hidden; }

#ifocus_piclist img { width:550px; height:225px; }

#ifocus_btn { display:inline; float:right; width:91px; margin:9px 9px 0 0; }

#ifocus_btn li { width:91px; height:57px; cursor:pointer; opacity:0.5; -moz-opacity:0.5; filter:alpha(opacity=50); }

#ifocus_btn img { width:75px; height:45px; margin:7px 0 0 11px; }

#ifocus_btn .current { background: url() no-repeat; opacity:1; -moz-opacity:1; filter:alpha(opacity=100); }

#ifocus_opdiv { position:absolute; left:0; bottom:0; width:545px; height:35px; background:#000; opacity:0.5; -moz-opacity:0.5; filter:alpha(opacity=50); }

#ifocus_tx { position:absolute; left:8px; bottom:8px; color:#FFF; }

#ifocus_tx .normal { display:none; }

</style>

<script type="text/javascript">

function $(id) { return document.getElementById(id); }

function addLoadEvent(func){

var oldonload = window.onload;

if (typeof window.onload != 'function') {

window.onload = func;

} else {

window.onload = function(){

oldonload();

func();

}

}

}

function moveElement(elementID,final_x,final_y,interval) {

  if (!document.getElementById) return false;

  if (!document.getElementById(elementID)) return false;

  var elem = document.getElementById(elementID);

  if (elem.movement) {

    clearTimeout(elem.movement);

  }

  if (!elem.style.left) {

    elem.style.left = "0px";

  }

  if (!elem.style.top) {

    elem.style.top = "0px";

  }

  var xpos = parseInt(elem.style.left);

  var ypos = parseInt(elem.style.top);

  if (xpos == final_x && ypos == final_y) {

return true;

  }

  if (xpos < final_x) {

    var dist = Math.ceil((final_x - xpos)/10);

    xpos = xpos + dist;

  }

  if (xpos > final_x) {

    var dist = Math.ceil((xpos - final_x)/10);

    xpos = xpos - dist;

  }

  if (ypos < final_y) {

    var dist = Math.ceil((final_y - ypos)/10);

    ypos = ypos + dist;

  }

  if (ypos > final_y) {

    var dist = Math.ceil((ypos - final_y)/10);

    ypos = ypos - dist;

  }

  elem.style.left = xpos + "px";

  elem.style.top = ypos + "px";

  var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";

  elem.movement = setTimeout(repeat,interval);

}

function classNormal(iFocusBtnID,iFocusTxID){

var iFocusBtns= $(iFocusBtnID).getElementsByTagName('li');

var iFocusTxs = $(iFocusTxID).getElementsByTagName('li');

for(var i=0; i<iFocusBtns.length; i++) {

iFocusBtns[i].className='normal';

iFocusTxs[i].className='normal';

}

}

function classCurrent(iFocusBtnID,iFocusTxID,n){

var iFocusBtns= $(iFocusBtnID).getElementsByTagName('li');

var iFocusTxs = $(iFocusTxID).getElementsByTagName('li');

iFocusBtns[n].className='current';

iFocusTxs[n].className='current';

}

function iFocusChange() {

if(!$('ifocus')) return false;

$('ifocus').onmouseover = function(){atuokey = true};

$('ifocus').onmouseout = function(){atuokey = false};

var iFocusBtns = $('ifocus_btn').getElementsByTagName('li');

var listLength = iFocusBtns.length;

iFocusBtns[0].onmouseover = function() {

moveElement('ifocus_piclist',0,0,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',0);

}

if (listLength>=2) {

iFocusBtns[1].onmouseover = function() {

moveElement('ifocus_piclist',0,-225,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',1);

}

}

if (listLength>=3) {

iFocusBtns[2].onmouseover = function() {

moveElement('ifocus_piclist',0,-450,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',2);

}

}

if (listLength>=4) {

iFocusBtns[3].onmouseover = function() {

moveElement('ifocus_piclist',0,-675,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',3);

}

}

}

setInterval('autoiFocus()',3500);

var atuokey = false;

function autoiFocus() {

if(!$('ifocus')) return false;

if(atuokey) return false;

var focusBtnList = $('ifocus_btn').getElementsByTagName('li');

var listLength = focusBtnList.length;

for(var i=0; i<listLength; i++) {

if (focusBtnList[i].className == 'current') var currentNum = i;

}

if (currentNum==0&&listLength!=1 ){

moveElement('ifocus_piclist',0,-225,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',1);

}

if (currentNum==1&&listLength!=2 ){

moveElement('ifocus_piclist',0,-450,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',2);

}

if (currentNum==2&&listLength!=3 ){

moveElement('ifocus_piclist',0,-675,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',3);

}

if (currentNum==3 ){

moveElement('ifocus_piclist',0,0,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',0);

}

if (currentNum==1&&listLength==2 ){

moveElement('ifocus_piclist',0,0,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',0);

}

if (currentNum==2&&listLength==3 ){

moveElement('ifocus_piclist',0,0,5);

classNormal('ifocus_btn','ifocus_tx');

classCurrent('ifocus_btn','ifocus_tx',0);

}

}

addLoadEvent(iFocusChange);

</script>

</head>

<body>

<br />

<div align="center">

<div id="ifocus">

<div id="ifocus_pic">

<div id="ifocus_piclist" style="left:0; top:0;">

<ul>

<li><a href="/" target="_blank"><img src="tool/ExamplePic/example1.jpg" width="550" height="225" alt="" border="0" /></a></li>

<li><a href="/" target="_blank"><img src="tool/ExamplePic/example2.jpg" width="550" height="225" alt="" border="0" /></a></li>

<li><a href="/" target="_blank"><img src="tool/ExamplePic/example3.jpg" width="550" height="225" alt="" border="0" /></a></li>

<li><a href="/" target="_blank"><img src="tool/ExamplePic/example4.jpg" width="550" height="225" alt="" border="0" /></a></li>

</ul>

</div>

<div id="ifocus_opdiv"></div>

<div id="ifocus_tx">

<ul>

<li class="current">2009年度中国最美的地方</li>

<li class="normal">国家不再允许任何省份搞特例恢复“五一”</li>

<li class="normal">我心中最想去的地方,是哪里呢?</li>

<li class="normal">欢迎来此旅游</li>

</ul>

</div>

</div>

<div id="ifocus_btn">

<ul>

<li class="current"><img src="tool/ExamplePic/example1.jpg" width="90" height="47" alt="" /></li>

<li class="normal"><img src="tool/ExamplePic/example2.jpg" width="90" height="47" alt="" /></li>

<li class="normal"><img src="tool/ExamplePic/example3.jpg" width="90" height="47" alt="" /></li>

<li class="normal"><img src="tool/ExamplePic/example4.jpg" width="90" height="47" alt="" /></li>

</ul>

</div>

</div>

</div>

</body>

</html>