var mess = new Array(
'<a href="fall08_lifeskills_degree.htm"><img src="images/fall08_lifeskills_degree.gif"/></a>', 
'<a href="fall08_lifeskills_transition.htm"><img src="images/fall08_lifeskills_transition.gif"/></a>'
);
var max = mess.length
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);