var mess = new Array(
'<img src="tiral2_files/image001.png">',
'<img src="tiral2_files/image002.png">',
'<img src="tiral2_files/image003.png">',
'<img src="tiral2_files/image004.png">',
'<img src="tiral2_files/image005.png">',
'<img src="tiral2_files/image006.png">',
'<img src="tiral2_files/image007.png">',
'<img src="tiral2_files/image008.png">',
'<img src="tiral2_files/image009.png">',
'<img src="tiral2_files/image010.png">'
);
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);