// JavaScript Document
function rand ( n )
{
  return ( Math.floor ( Math.random ( ) * n + 1 ) );
}
//Background Image Slideshow- © Dynamic Drive (www.dynamicdrive.com)
//For full source code, 100's more DHTML scripts, and TOS,
//visit http://www.dynamicdrive.com

//Specify background images to slide
var bgslides=new Array()
bgslides[0]="images/course/headers/01.jpg"
bgslides[1]="images/course/headers/02.jpg"
bgslides[2]="images/course/headers/03.jpg"
bgslides[3]="images/course/headers/04.jpg"
bgslides[4]="images/course/headers/05.jpg"
bgslides[5]="images/course/headers/06.jpg"
bgslides[6]="images/course/headers/07.jpg"
bgslides[7]="images/course/headers/08.jpg"
bgslides[8]="images/course/headers/09.jpg"
bgslides[9]="images/course/headers/10.jpg"
bgslides[10]="images/course/headers/11.jpg"
bgslides[11]="images/course/headers/12.jpg"
bgslides[12]="images/course/headers/13.jpg"
bgslides[13]="images/course/headers/13a.jpg"
bgslides[14]="images/course/headers/14.jpg"
bgslides[15]="images/course/headers/15.jpg"
bgslides[16]="images/course/headers/15a.jpg"
bgslides[17]="images/course/headers/15b.jpg"
bgslides[18]="images/course/headers/16.jpg"
bgslides[19]="images/course/headers/17.jpg"
bgslides[20]="images/course/headers/17a.jpg"
bgslides[21]="images/course/headers/17b.jpg"
bgslides[22]="images/course/headers/18.jpg"


//Specify interval between slide (in miliseconds)
var speed=10000

//preload images
var processed=new Array()
for (i=0;i<bgslides.length;i++){
processed[i]=new Image()
processed[i].src=bgslides[i]
}

var inc=-1

function slideback(){

<!-- if (inc<bgslides.length-1)
<!-- inc++
<!-- else
<!-- inc=0 -->
inc = rand(23)-1
document.getElementById? document.getElementById('bslide').style.backgroundImage='url('+processed[inc].src+')' : document.all['bslide'].background=processed[inc].src
}

if (document.all||document.getElementById)
window.onload=new Function('slideback();setInterval("slideback()",speed)')