var mess = new Array(
'<img src="images/title-1.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-2.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-3.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-4.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-5.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-6.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-7.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-8.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-9.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-10.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-11.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-12.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-13.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-14.jpg" height="150" width="800" alt="Art by Susan Rosa">',
'<img src="images/title-15.jpg" height="150" width="800" alt="Art by Susan Rosa">');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.write(mess[num]);