function Photo(filename) {
    this.filename = filename;
}


var allPhotos = new Array(
    new Photo("img_3609.jpg"),
 new Photo("img_3617.jpg"),
 new Photo("img_3618.jpg"),
 new Photo("img_3622.jpg"),
 new Photo("img_3624.jpg"),
 new Photo("img_3627.jpg"),
 new Photo("img_3632.jpg"),
 new Photo("img_3633.jpg"),
 new Photo("img_3636.jpg"),
 new Photo("img_3639.jpg"),
 new Photo("img_3642.jpg"),
 new Photo("img_3649.jpg"),
 new Photo("img_3650.jpg"),
 new Photo("img_3654.jpg"),
 new Photo("img_3655.jpg"),
 new Photo("img_3658.jpg"),
 new Photo("img_3662.jpg"),
 new Photo("img_3665.jpg"),
 new Photo("img_3667.jpg"),
 new Photo("img_3678.jpg"),
 new Photo("img_3679.jpg"),
 new Photo("img_3680.jpg"),
 new Photo("img_3682.jpg"),
 new Photo("img_3683.jpg"),
 new Photo("img_3696.jpg"),
 new Photo("img_3698.jpg"),
 new Photo("img_3703.jpg"),
 new Photo("img_3706.jpg"),
 new Photo("img_3708.jpg"),
 new Photo("img_3710.jpg"),
 new Photo("img_3713.jpg"),
 new Photo("img_3717.jpg"),
 new Photo("img_3718.jpg"),
 new Photo("img_3726.jpg"),
 new Photo("img_3732.jpg")
 );

var maxWidth  = 600;
var maxHeight = 400;