var r_image = new Array (7)
r_image[0] = "images/photo_left_001.jpg";
r_image[1] = "images/photo_left_002.jpg";
r_image[2] = "images/photo_left_003.jpg";
r_image[3] = "images/photo_left_004.jpg";
r_image[4] = "images/photo_left_005.jpg";
r_image[5] = "images/photo_left_006.jpg";
r_image[6] = "images/photo_left_007.jpg";
var rand_int=Math.floor(Math.random()*7);