bg = new Array(2); 
bg[0] = '../photo/visualize-01.jpg'  
bg[1] = '../photo/visualize-02.jpg' 
bg[2] = '../photo/visualize-03.jpg' 
bg[3] = '../photo/visualize-04.jpg' 
bg[4] = '../photo/visualize-05.jpg' 
bg[5] = '../photo/visualize-06.jpg' 
bg[5] = '../photo/visualize-07.jpg' 
index = Math.floor(Math.random() * bg.length);
document.write("<style>#huerreson{background-image:url("+bg[index]+");background-position: bottom;}</style>");