[Deff]

<script type="text/javascript">
var howMany = 2
  var quote = new Array(howMany+1)
  quote[0]="<a href=http://link1.ru><font color=#636363>текст 1</font></a>"
  quote[1]="<a href=http://link2.ru><font color=#636363>текст 2</font></a>"
  quote[2]="<a href=http://link3.ru><font color=#636363>текст 3</font></a>"

function rndnumber(){
        var randscript = -1
        while (randscript < 0 || randscript > howMany || isNaN(randscript)){
                randscript = parseInt(Math.random()*(howMany+1))
        }
        return randscript
}

</script>

<SCRIPT language="javascript"><!--

quo = rndnumber()
quox = quote[quo]
document.write(quox)

//--></SCRIPT>