var mess = new Array(
'<img src="./photos/mathpic1.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic2.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic3.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic4.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic5.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic6.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic7.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic8.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic9.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic10.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic12.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic13.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic14.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic15.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic16.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic17.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic18.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic19.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">',
'<img src="./photos/mathpic20.jpg" border="0" width="356" height="356" alt="" style="margin-top:20px;">'
);
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);
                    