randomimageB = new Array(3);
randomimageB[0] = "1";
randomimageB[1] = "2";
randomimageB[2] = "3";
randomimageB[3] = "hills";



//calculate a random index
index = Math.floor(Math.random() * randomimageB.length);

//display the quotation
document.getElementById('randomfocus').innerHTML="<img src=\"/_assets/images/randomfocus/" + randomimageB[index] + ".jpg\" alt=\"Photograph\" class=\"photo\" />";