Tilpasning af færdigt slideshow script

På http://www.dynamicdrive.com/dynamicindex14/image4.htm er der et slideshow script som jeg gerne vil have modificeret således at det skal virke med 4 billeder ved siden af hinanden der hver køre deres slideshow.

Jeg er håbløs til matematik og programering, så jeg fisker lidt efter en venlig sjæl der gider opskrive scriptet så det virker x 4

Scriptet postes også her:



<html>
<head>

<script language="JavaScript1.2">

/*
Blending Image Slide Show Script-
© Dynamic Drive (www.dynamicdrive.com)
For full source code, 100's more DHTML scripts, and Terms Of Use, visit dynamicdrive.com
*/

function reapply(){
setTimeout("slideit()",2000)
return true
}
window.onerror=reapply
</script>
<script language="JavaScript1.1">
<!--
var image1=new Image()
image1.src="firstimage.gif"
var image2=new Image()
image2.src="second.gif"
var image3=new Image()
image3.src="third.gif"
//-->
</script>

</head>


<body onLoad="slideit()">



<a href="java script:slidelink()" onMouseover="window.status='Click on the image to learn more about it!';return true" onMouseout="window.status=''"><img src="firstimage.gif" name="slide" border=0 style="filter:blendTrans(duration=3)"></a>
<script>
<!--
////change number of images below
var number_of_images=3
//change speed below (in seconds)
var speed=3
var step=1
var whichimage=1
function slideit(){
if (!document.images)
return
if (document.all)
slide.filters.blendTrans.apply()
document.images.slide.src=eval("image"+step+".src")
if (document.all)
slide.filters.blendTrans.play()
whichimage=step
if (step<number_of_images)
step++
else
step=1
if (document.all)
setTimeout("slideit()",speed*1000+3000)
else
setTimeout("slideit()",speed*1000)
}
function slidelink(){
if (whichimage==1)
window.location="link1.htm"
else if (whichimage==2)
window.location="link2.htm"
else if (whichimage==3)
window.location="link3.htm"
}
//-->
</script>

<p align="center"><font face="Arial" size="-2">Free DHTML scripts provided by<br>
<a href="http://dynamicdrive.com">Dynamic Drive</a></font></p>

</body>
</html>