62、旋转链接特效
类别: JavaScript教程 
====1、将以下代码加入HTML的<HEAD></HEAD>之间：
<style>
.fly {color:336c6c;font-family:arial;font-size:24px;position:absolute;
visibility:hidden;z-index:2;}
.logo {font-family: times;font-size:48px;color:blue;
position:absolute;top:0px;left:70px;
visibility:visible;z-index:1;}
.desc {text-align: center;font-family:楷体_GB2312;
font-size:18px;color: #336c6c;position:absolute;top:220px;
left: 140px;width:400px;visibility:hidden;
z-index:0;}
BODY {background:#c0c0c0;}
A {color:lime;}
A:HOVER {color : yellow;}
</style>
<script LANGUAGE="JavaScript">
ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false
function showObject(obj) {
if (ns4) obj.visibility = "show"
else if (ie4) obj.visibility = "visible"
}
function hideObject(obj) {
if (ns4) obj.visibility = "hide"
else if (ie4) obj.visibility = "hidden"
}
function slideLogo(from, to) {
if (from < to) {
company.top = (from += 10);
setTimeout(\'slideLogo(\' + from + \',\' + to + \')\', 20);
}
else initObjects();
}
function rotateObjects() {
for (var i = 0; i < pos.length; i++) {
pos[i] += inc; objects[i].visibility = \'visible\';
objects[i].left = (r * Math.cos(pos[i])) + xoff
}
rotateTimer = setTimeout("rotateObjects()", 50);
}
function initObjects() {
objects = new Array(fly1, fly2, fly3, fly4);
pos = new Array();
pos[0] = 0;
for (var i = 1; i < objects.length; i++) {
pos[i] = parseFloat(pos[i - 1] + ((2 * pi) / objects.length));
}
rotateObjects();
}
/* Variables for rotating objects */
var objects;
var pos;
var r = 160; // radius
var xoff = 280; // x offset
var yoff = 170; // y offset
var pi = Math.PI; // get pi
var inc = pi / 180; // degrees per rotation cycle
var objects; // objects to be rotated
var pos; // position for objects
</script>
====2、将以下代码加入HTML的<BODY></BODY>之间：
<body BGCOLOR="#c0c0c0" link="green" TEXT="black">
<div ID="fly1" CLASS="fly"><a HREF="#" onMouseOver="showObject(desc1)"
onMouseOut="hideObject(desc1)">
<p>Item 1</a><br></p>
</div><div ID="fly2" CLASS="fly"><a HREF="#" onMouseOver="showObject(desc2)"
onMouseOut="hideObject(desc2)">
<p>Item 2</a><br></p>
</div><div ID="fly3" CLASS="fly"><a HREF="#" onMouseOver="showObject(desc3)"
onMouseOut="hideObject(desc3)">
<p>Item 3</a><br></p>
</div><div ID="fly4" CLASS="fly"><a HREF="#" onMouseOver="showObject(desc4)"
onMouseOut="hideObject(desc4)">
<p>Item 4</a><br></p>
</div><div ID="company" CLASS="logo">
<p><small>WELCOME TO DREAM WORKROOM</small></p> //显示的文字
</div><div ID="desc1" CLASS="desc">
<p>Item 1的内容 </p>
</div><div ID="desc2" CLASS="desc">
<p>Item 2的内容 </p>
</div><div ID="desc3" CLASS="desc">
<p>Item 3的内容 </p>
</div><div ID="desc4" CLASS="desc">
<p>Item 4的内容 </p>
</div><script LANGUAGE="JavaScript">
/* Simple version detection */
var isNS = (navigator.appName == "Netscape" && parseInt(navigator.appVersion) >=
4);/* They can be used in placeof hidden and visible because on occasion Navigator
has problems with the two */
var HIDDEN = (isNS) ? \'hide\' : \'hidden\';
var VISIBLE = (isNS) ? \'show\' : \'visible\';
/* Create shortcut variables for different absolutely positioned elements */
var fly1 = (isNS) ? document.fly1 : document.all.fly1.style;
var fly2 = (isNS) ? document.fly2 : document.all.fly2.style;
var fly3 = (isNS) ? document.fly3 : document.all.fly3.style;
var fly4 = (isNS) ? document.fly4 : document.all.fly4.style;
var company = (isNS) ? document.company : document.all.company.style;
var desc1 = (isNS) ? document.desc1 : document.all.desc1.style;
var desc2 = (isNS) ? document.desc2 : document.all.desc2.style;
var desc3 = (isNS) ? document.desc3 : document.all.desc3.style;
var desc4 = (isNS) ? document.desc4 : document.all.desc4.style;
/* Begin the sliding of the company logo */
slideLogo(0, 140);
</script>
<style>
.fly {color:336c6c;font-family:arial;font-size:24px;position:absolute;
visibility:hidden;z-index:2;}
.logo {font-family: times;font-size:48px;color:blue;
position:absolute;top:0px;left:70px;
visibility:visible;z-index:1;}
.desc {text-align: center;font-family:楷体_GB2312;
font-size:18px;color: #336c6c;position:absolute;top:220px;
left: 140px;width:400px;visibility:hidden;
z-index:0;}
BODY {background:#c0c0c0;}
A {color:lime;}
A:HOVER {color : yellow;}
</style>
<script LANGUAGE="JavaScript">
ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false
function showObject(obj) {
if (ns4) obj.visibility = "show"
else if (ie4) obj.visibility = "visible"
}
function hideObject(obj) {
if (ns4) obj.visibility = "hide"
else if (ie4) obj.visibility = "hidden"
}
function slideLogo(from, to) {
if (from < to) {
company.top = (from += 10);
setTimeout(\'slideLogo(\' + from + \',\' + to + \')\', 20);
}
else initObjects();
}
function rotateObjects() {
for (var i = 0; i < pos.length; i++) {
pos[i] += inc; objects[i].visibility = \'visible\';
objects[i].left = (r * Math.cos(pos[i])) + xoff
}
rotateTimer = setTimeout("rotateObjects()", 50);
}
function initObjects() {
objects = new Array(fly1, fly2, fly3, fly4);
pos = new Array();
pos[0] = 0;
for (var i = 1; i < objects.length; i++) {
pos[i] = parseFloat(pos[i - 1] + ((2 * pi) / objects.length));
}
rotateObjects();
}
/* Variables for rotating objects */
var objects;
var pos;
var r = 160; // radius
var xoff = 280; // x offset
var yoff = 170; // y offset
var pi = Math.PI; // get pi
var inc = pi / 180; // degrees per rotation cycle
var objects; // objects to be rotated
var pos; // position for objects
</script>
====2、将以下代码加入HTML的<BODY></BODY>之间：
<body BGCOLOR="#c0c0c0" link="green" TEXT="black">
<div ID="fly1" CLASS="fly"><a HREF="#" onMouseOver="showObject(desc1)"
onMouseOut="hideObject(desc1)">
<p>Item 1</a><br></p>
</div><div ID="fly2" CLASS="fly"><a HREF="#" onMouseOver="showObject(desc2)"
onMouseOut="hideObject(desc2)">
<p>Item 2</a><br></p>
</div><div ID="fly3" CLASS="fly"><a HREF="#" onMouseOver="showObject(desc3)"
onMouseOut="hideObject(desc3)">
<p>Item 3</a><br></p>
</div><div ID="fly4" CLASS="fly"><a HREF="#" onMouseOver="showObject(desc4)"
onMouseOut="hideObject(desc4)">
<p>Item 4</a><br></p>
</div><div ID="company" CLASS="logo">
<p><small>WELCOME TO DREAM WORKROOM</small></p> //显示的文字
</div><div ID="desc1" CLASS="desc">
<p>Item 1的内容 </p>
</div><div ID="desc2" CLASS="desc">
<p>Item 2的内容 </p>
</div><div ID="desc3" CLASS="desc">
<p>Item 3的内容 </p>
</div><div ID="desc4" CLASS="desc">
<p>Item 4的内容 </p>
</div><script LANGUAGE="JavaScript">
/* Simple version detection */
var isNS = (navigator.appName == "Netscape" && parseInt(navigator.appVersion) >=
4);/* They can be used in placeof hidden and visible because on occasion Navigator
has problems with the two */
var HIDDEN = (isNS) ? \'hide\' : \'hidden\';
var VISIBLE = (isNS) ? \'show\' : \'visible\';
/* Create shortcut variables for different absolutely positioned elements */
var fly1 = (isNS) ? document.fly1 : document.all.fly1.style;
var fly2 = (isNS) ? document.fly2 : document.all.fly2.style;
var fly3 = (isNS) ? document.fly3 : document.all.fly3.style;
var fly4 = (isNS) ? document.fly4 : document.all.fly4.style;
var company = (isNS) ? document.company : document.all.company.style;
var desc1 = (isNS) ? document.desc1 : document.all.desc1.style;
var desc2 = (isNS) ? document.desc2 : document.all.desc2.style;
var desc3 = (isNS) ? document.desc3 : document.all.desc3.style;
var desc4 = (isNS) ? document.desc4 : document.all.desc4.style;
/* Begin the sliding of the company logo */
slideLogo(0, 140);
</script>
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