// set the number of images to choose from
imageGroup1 = new Array(7);

// set the image files to choose from
imageGroup1[0] = 'home_photobar.jpg';
imageGroup1[1] = 'home_photobar2.jpg';
imageGroup1[2] = 'home_photobar3.jpg';
imageGroup1[3] = 'home_photobar4.jpg';
imageGroup1[4] = 'home_photobar5.jpg';
imageGroup1[5] = 'home_photobar6.jpg';
imageGroup1[6] = 'home_photobar7.jpg';

// choose the image
index1 = Math.floor(Math.random() * imageGroup1.length);