// JavaScript Document


  //put your jQuery code here
  var randomnumber=Math.floor(Math.random()*6);
  randomnumber = randomnumber+1;
  //$('.site').css('background-image','url(http://sg.nitrodesigns.com/projects/xiaxue/design/images/header'+randomnumber+'.jpg)');
  document.write('<style>.site{background-image:url(http://www.xiaxue.sg/blogfiles/images/header'+randomnumber+'.jpg)</style>');