banner rotator javascript

codigo que nos permite mostrar diferentes banners con diferentes enlaces, los mismos cada x cantidad de tiempo varian

Código Javascript


<html>
<head>
<script type="text/javascript">
<!-- Beginning of JavaScript -
// CONFIGURATION:
// 1. Create your images (gif or jpg). They should have the same width and height. 
// Put those images in the same directory as the HTML-file. 
// You can add as many images as you like.
// 2. Copy the script-block and paste it into head-section of your HTML-file..
// 3. Copy the span-blocks with the id "imgcontainer1" and "imgcontainer2". 
// Paste them into the body-section of your HTML-file.
// 4. Insert 'onLoad="initiate()"' into the body tag.
// 5. Configure the varibales below
// The width of your images (pixels). All pictures should have the same width.
var imgwidth=400
// The height of your images (pixels). All pictures should have the same height.
var imgheight=60
// The horizontal and vertical position of the images (pixels). 
var pos_left=20
var pos_top=20
// The name of your images. You may add as many images as you like.
var imgname=new Array()
imgname[0]="ejemplos/ej1.gif"
imgname[1]="ejemplos/ej2.gif"
imgname[2]="ejemplos/ej3.gif"
imgname[3]="ejemplos/ej4.gif"
// Where should those images be linked to? 
// Add an URL for each image.
// If you don't want to add an URL just write '#' instead of 
// the URL, see sample imgurl[2].
var imgurl=new Array()
imgurl[0]="http://www.gamarod.com.ar"
imgurl[1]="http://www.2knetwork.com.ar"
imgurl[2]="http://www.diario-ole.com.ar"
imgurl[3]="http://www.datafull.com"
// This block will preload your images. Do not edit this block.
var imgpreload=new Array()
for (i=0;i<=imgname.length-1;i++) {
imgpreload[i]=new Image()
imgpreload[i].src=imgname[i]
}
// Standstill-time between the images (microseconds).
var pause=2000
// Speed of the stretching and shrinking effect. More means slower.
var speed=20
// This variable also affects the speed (the length of the step between each inmage-frame measured in pixels). More means faster.
var step=10
// Do not edit the script below
var i_loop=0
var i_image1=0
var i_image2=1

function stretchimage() {
if (i_loop<=imgwidth) {
if (document.all) {
imgcontainer1.innerHTML="<a href='"+imgurl[i_image1]+"' target='_blank'><img width='"+i_loop+"' height='"+imgheight+"' src='"+imgname[i_image1]+"' border='0'></a>"
document.all.imgcontainer2.style.posLeft=document.all.imgcontainer1.style.posLeft+i_loop
imgcontainer2.innerHTML="<a href='"+imgurl[i_image2]+"' target='_blank'><img width='"+(imgwidth-i_loop)+"' height='"+imgheight+"' src='"+imgname[i_image2]+"' border='0'></a>"
}
i_loop=i_loop+step
var timer=setTimeout("stretchimage()",speed)
}
else {
clearTimeout(timer)
changeimage()
}
}
function changeimage() {
i_loop=0
i_image1++
if (i_image1>imgname.length-1) {i_image1=0}
i_image2=i_image1-1
if (i_image2>imgname.length-1) {i_image2=0}
if (i_image2<0) {i_image2=imgname.length-1}
document.all.imgcontainer2.style.posLeft=document.all.imgcontainer1.style.posLeft
var timer=setTimeout("stretchimage()",pause)
}
function initiate() {
if (document.all) {
document.all.imgcontainer1.style.posLeft=pos_left
document.all.imgcontainer2.style.posLeft=pos_left
document.all.imgcontainer1.style.posTop=pos_top
document.all.imgcontainer2.style.posTop=pos_top
changeimage()
}
if (document.layers) {
document.imgcontainer1.left=pos_left
document.imgcontainer2.left=pos_left
document.imgcontainer1.top=pos_top
document.imgcontainer2.top=pos_top
rotatenetscape()
}
}
function rotatenetscape() {
document.imgcontainer1.document.write("<a href='"+imgurl[i_image1]+"' target='_blank'><img src='"+imgname[i_image1]+"' border='0'></a>") 
document.imgcontainer1.document.close() 
i_image1++
if (i_image1>imgname.length-1) {i_image1=0}
var timer=setTimeout("rotatenetscape()",pause*2)
}
// - End of JavaScript - -->
</script>
</head>
<body bgcolor="#FFFFFF" text="000000" link="0000FF" alink="0000FF" vlink="0000FF" onLoad="initiate()">
<span id="imgcontainer1" style="position:absolute"></span>
<span id="imgcontainer2" style="position:absolute"></span>
</body>
</html>
Ver ejemplo Javascript en funcionamiento