var material = new Array;
material[0] = "r0001.jpg";
material[1] = "r0002.jpg";
material[2] = "r0003.jpg";
material[3] = "r0004.jpg";
material[4] = "r0005.jpg";

$(function(){
  var seed = Math.floor(material.length * Math.random());
  var path = "/rdm_im/" + material[seed];
  $("p.theme img").attr("src",path);
});