// JavaScript Document
var gallery = new Array();
gallery[0] = new Array("01.jpg","02.jpg","03.jpg","04.jpg","05.jpg");
gallery[1] = new Array("06.jpg","07.jpg","08.jpg","09.jpg","10.jpg");
gallery[2] = new Array("11.jpg","12.jpg","13.jpg","14.jpg","15.jpg");
gallery[3] = new Array("16.jpg","17.jpg","18.jpg","19.jpg","20.jpg");

function pickImageFrom(whichGallery)
{
var idx = Math.floor(Math.random() * gallery[whichGallery].length);
document.write('<a href ="black_white.html" title="Click Here"><img src="images/random_images/' + gallery[whichGallery][idx] + '" border=0 width=167 height=167></a>');
}