// JavaScript Document
/*
	***********************************************************************
	# NAME OF THE FILE : random_image.js
	# CREATED BY : Ramya Chakinarapu
	# DATE : JUL 12 06'
	#**********************************************************************
	# PURPOSE OF THIS SCRIPT: 
							1.	To create an image array that holds address the 
	                          	images to be displayed
							2.	To preload the images in order to reduce the 
							  	download time.
							3.	To pick a random image for every page reload and 
							  	display it on the home page.
							
	# PURPOSE OF THIS PROJECT: To display a random image on the home page for 
							   every page reload.
															
	#**********************************************************************
	#INPUT : 

	#OUTPUT : 
	#**********************************************************************
*/
var i=0;
var path = "http://" + location.hostname + "/";
var images = new Array('images/webizzy.jpg','images/Atrium.jpg','images/circ2.jpg','images/WebShad.jpg','images/malestworker.jpg','images/femalestudent.jpg','images/malestudent.jpg','images/Dr H Garcia.gif','images/laptopctr.jpg','images/mediaresources.jpg','images/students.jpg','images/webnewman.jpg','images/reference.jpg');
//preload all the images to reduce the download time
var images_preloaded = new Array();
for(i=0;i<images.length;i++)
{
	images_preloaded[i] = new Image();
	images_preloaded[i].src = path + images[i];
}
function pick_random_Image()
{
	var image_index = Math.round(Math.random()*(images.length-1));
	document.write('<img src="'+images[image_index]+'" alt="Library" width="300" height="300">');
}