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<script type="text/javascript">
/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com */
/******************************************************
Focus Slide
version 1.0
last revision: 12.17.2004
steve@slayeroffice.com
Should you improve upon or
modify this code, please let me know
so that I can update the version hosted
at slayeroffice.
PLEASE LEAVE THIS NOTICE INTACT!
******************************************************/
var d=document; // shortcut reference to the document object
var activeLI = 0; // the currently "active" list element - value represents its index in the liObj array
var zInterval = null; // interval variable
var SLIDE_STEP = 8; // how many pixels to move the sliding div at a time
var SLIDER_WIDTH = 74; // the width of the sliding div. used to calculate
// its left based on the width and left of the active LI element
function init() {
// bail out if this is an older browser or Opera which gets the offsets wrong
// the opera issue is fixable by subtracting the container UL's width from the
// offsetLefts...but I don't care enough to do it
// this does NOT break opera, it just wont get the sliding thing
if(!document.getElementById || window.opera)return;
// create references to the LI's
mObj = d.getElementById("mContainer");
liObj = mObj.getElementsByTagName("li");
// set up the mouse over events
for(i=0;i<liObj.length;i++) {
liObj[i].xid = i;
liObj[i].onmouseover = function() { initSlide(this.xid); }
}
// create the slider object
slideObj = mObj.appendChild(d.createElement("div"));
slideObj.id = "slider";
// position the slider over the first LI
x = liObj[activeLI].offsetLeft + (liObj[activeLI].offsetWidth/3 - SLIDER_WIDTH/3)-5;
y = liObj[activeLI].offsetTop-3;
slideObj.style.top = y + "px";
slideObj.style.left = x + "px";
}
function initSlide(objIndex) {
// return if the user is mousing over the currently active LI
if(objIndex == activeLI)return;
// clear the interval so we can start it over in a few lines to avoid doubling up on intervals
clearInterval(zInterval);
// set the active list item to the object index argument
activeLI = objIndex;
// figure out the destination for the sliding div element
destinationX = Math.floor(liObj[activeLI].offsetLeft + (liObj[activeLI].offsetWidth/3 - SLIDER_WIDTH/3))-5;
// start the interval
intervalMethod = function() { doSlide(destinationX); }
zInterval = setInterval(intervalMethod,10);
}
function doSlide(dX) {
// get the current left of the sliding div
x = slideObj.offsetLeft;
if(x+SLIDE_STEP<dX) {
// div is less than its destination, move it to the right
x+=SLIDE_STEP;
slideObj.style.left = x + "px";
} else if (x-SLIDE_STEP>dX) {
// div is more than its destination, move to the left
x-=SLIDE_STEP;
slideObj.style.left = x + "px";
} else {
// div is within the boundaries of its destination. put it where its supposed to be
// and clear the interval
slideObj.style.left = dX + "px";
clearInterval(zInterval);
zInterval = null;
}
}
// Multiple onload function created by: Simon Willison
// http://simonwillison.net/2004/May/26/addLoadEvent/
function addLoadEvent(func) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload = function() {
if (oldonload) {
oldonload();
}
func();
}
}
}
addLoadEvent(function() {
init();
});
</script> <style type="text/css">
#mContainer {
position:relative;
margin:0 auto;
width:404px;
height:25px;
border-top:1px solid #638DA1;
border-bottom:1px solid #638DA1;
background-color:#F2F5F6;
padding:5px 0 0 0;
z-index:0;
}
#mContainer li {
position:relative;
display:inline;
margin:0 10px 0 12px;
font:0.8em arial,verdana;
padding:0;
z-index:20;
}
#mContainer li a {
text-decoration:none;
color:#638DA1;
}
#slider {
position:absolute;
background-color: #98B4C1;
border:1px solid #78919B;
width:74px;
height:20px;
padding:0;
z-index:1;
}
</style> <!-- this list is the actionable markup -->
<ul id="mContainer">
<li><a title="Item One" href="#">Item One</a></li>
<li><a title="Item Two" href="#">Item Two</a></li>
<li><a title="Item Three" href="#">Item Three</a></li>
<li><a title="Item Four" href="#">Item Four</a></li>
<li><a title="Item Five" href="#">Item Five</a></li>
</ul>
