var total = 3;

var refs = [
"http://evrazia.org/modules.php?name=News&file=article&sid=2231",
"http://evrazia.org/modules.php?name=News&file=article&sid=2152",
"http://www.evrazia.org/modules.php?name=News&file=article&sid=2139"

];


var rn = Math.random();
var ch = Math.floor(rn * total);
var ln = refs[ch];
document.write("\n<a href=\"" + ln + "\"><img src=\"http://evrazia.org/java/sobytia/sob" + (ch+1) + ".jpg\"  alt=\"\" border=\"1\"></a>\n");