var refreshCount = 0;
var refreshTime = 30000;
$(document).ready(function(){	
			setTimeout(delayedRefresh, refreshTime);
});

function delayedRefresh() {
  $('#top-menu-links').html('');
  $('#top-menu-links').append("<ul>");
  for (i=0;i<=3;i++)
  {
  	var randomnumber=Math.floor(Math.random()*$("#hot_items .hot_link").length);
  	$('#top-menu-links ul').append("<li></li>");
  	$('#top-menu-links li:last').append($("#hot_items .hot_link")[randomnumber]);
  }
  $('#top-menu-links').append("</ul>");
  if(refreshCount < 4)
  {
    setTimeout(delayedRefresh, refreshTime);
    refreshCount++;
  }
}