$(document).ready(function(){

  var bgnum = Math.ceil( Math.random()*6 );
  var bgstr = "black url(./images/bg_body_1" + bgnum + ".jpg) top center no-repeat";
  $("body").css("background",bgstr);

});

function show_opening(){

  $('#dc_intro').slideDown(1200, function(){
    $('#dc_washington').show().animate({
      left : '140px',
      opacity: '100'
    }, 900, 'swing'); 
  });
 
}