var imlocation = 'images/';

 function ImageArray (n) {
   this.length = n;
   for (var i =1; i <= n; i++) {
     this[i] = ' '
   }
 }

 image = new ImageArray(6);
 image[0] = 'football1.jpg'
 image[1] = 'football2.jpg'
 image[2] = 'cheerleaders1.jpg'
 image[3] = 'student1.jpg'
 image[4] = 'student2.jpg'
 image[5] = 'goldenkey.jpg'
 image[6] = 'student1.jpg'
 image[7] = 'student2.jpg'
 image[8] = 'goldenkey.jpg'

 var rand = 60/image.length
 function randomimage() {
	image_number = null;
	image_number =Math.floor(Math.random()*9); 
 	return(image[image_number]);
 }

 document.write("<img src='" + imlocation + randomimage()+ "'>");