// Image rotate
// Northwestern University Study Abroad
// Christopher Garcia - 11.09.2007

var delay=4000
var curindex=0
var randomimages=new Array()
	randomimages[0]="http://www.northwestern.edu/studyabroad/images/rotate/image1.jpg"
	randomimages[1]="http://www.northwestern.edu/studyabroad/images/rotate/image2.jpg"
	randomimages[2]="http://www.northwestern.edu/studyabroad/images/rotate/image3.jpg"
	randomimages[3]="http://www.northwestern.edu/studyabroad/images/rotate/image4.jpg"
	randomimages[4]="http://www.northwestern.edu/studyabroad/images/rotate/image5.jpg"
	randomimages[5]="http://www.northwestern.edu/studyabroad/images/rotate/image6.jpg"
	randomimages[6]="http://www.northwestern.edu/studyabroad/images/rotate/image7.jpg"
	randomimages[7]="http://www.northwestern.edu/studyabroad/images/rotate/image8.jpg"
	randomimages[8]="http://www.northwestern.edu/studyabroad/images/rotate/image9.jpg"
	randomimages[9]="http://www.northwestern.edu/studyabroad/images/rotate/image11.jpg"
	randomimages[10]="http://www.northwestern.edu/studyabroad/images/rotate/image10.jpg"
	randomimages[11]="http://www.northwestern.edu/studyabroad/images/rotate/image12.jpg"
	randomimages[12]="http://www.northwestern.edu/studyabroad/images/rotate/image12.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)