var bdis = "<img src=\"";
var edis = " usemap=\"#FPMap1\" border=\"0\">";
var rnumb = "";
var img = "";

document.write("<map name=\"FPMap1\"><area href=\"/charter.php\" shape=\"rect\" coords=\"638, 206, 789, 226\"></map>");

rnumb += Math.floor(Math.random()*3);
img = rnumb;

if (img == "0") {
    document.write(bdis+ "/images/rotate_image1.jpg\"" +edis);
}
if (img == "1") {
    document.write(bdis+ "/images/rotate_image2.jpg\"" +edis);
}
if (img == "2") {
    document.write(bdis+ "/images/rotate_image3.jpg\"" +edis);
}