var delay=5000 //set delay in miliseconds
var curindex=0

var randomimages=new Array(
						   "/images/slide/slide_1.jpg",
						   "/images/slide/slide_2.jpg",
						   "/images/slide/slide_3.jpg",
						   "/images/slide/slide_4.jpg",
						   "/images/slide/slide_5.jpg",
						   "/images/slide/slide_6.jpg",
						   "/images/slide/slide_7.jpg",
						   "/images/slide/slide_8.jpg",
						   "/images/slide/slide_9.jpg",
						   "/images/slide/slide_10.jpg",
						   "/images/slide/slide_11.jpg",
						   "/images/slide/slide_12.jpg")

var preload=new Array()

for (n=0;n<randomimages.length;n++)
{
	preload[n]=new Image()
	preload[n].src=randomimages[n]
}

document.write('<img name="defaultimage" src="'+randomimages[Math.floor(Math.random()*(randomimages.length))]+'">')

function rotateimage()
{

if (curindex==(tempindex=Math.floor(Math.random()*(randomimages.length)))){
curindex=curindex==0? 1 : curindex-1
}
else
curindex=tempindex

	document.images.defaultimage.src=randomimages[curindex]
}

setInterval("rotateimage()",delay)