var mess = new Array();

str =  '<img src="../images/top/Maternity-1.jpg" alt="Monadnock Community Hospital" width=598 height=210 border=0">\n';
mess[0] = str

str =  '<img src="../images/top/Maternity-2.jpg" alt="Monadnock Community Hospital" width=598 height=210 border=0">\n';
mess[1] = str

str =  '<img src="../images/top/Maternity-3.jpg" alt="Monadnock Community Hospital" width=598 height=210 border=0">\n';
mess[2] = str

str =  '<img src="../images/top/Maternity-4.jpg" alt="Monadnock Community Hospital" width=598 height=210 border=0">\n';
mess[3] = str

var max = mess.length;
var num = Math.floor((Math.random() * max));

document.writeln(mess[num]);