<!--
function my_random(n) {
if(navigator.appVersion.charAt(0) <=2 &&
navigator.appName.charAt(0) == "N") {
t = new Date();
t = t.getTime(); t += ""; t = t.substring(t.length-3,t.length); t = eval(t)/1000;
t = Math.floor(t*n);
return t;
}
else {
t = Math.floor(Math.random()*n);
return t;
}
}

var imgMax = 2; 
var imgRand = my_random(imgMax)+1;

if(imgRand == 1) document.write('<IMG SRC="top_img/top22.jpg" width=700 height=300>');
else if(imgRand == 2) document.write('<IMG SRC="top_img/top23.jpg" width=700 height=300>');
//-->