var banner_count = 17;
        Banners = new Array(banner_count);
  
        Banners[0] = "pictures/launch_7_2011.jpg";
  
        
       
        Banners[1] = "pictures/GeoAppsComp.jpg";
        Banners[2] = "pictures/training_07_2011_pg_1.jpg";
        Banners[3] = "pictures/GIS_Session_May7_2010.jpg";
      
        Banners[4] = "pictures/nigeriasat1.jpg";
                     
        Banners[5] = "pictures/training_07_pg_2.jpg";
	    Banners[6] = "pictures/launch_7_2011_2.jpg";
   
        Banners[7] = "pictures/nasrda_campus.jpg";

        Banners[8] = "pictures/geoapps_promo.jpg";
        
        Banners[9] = "pictures/launch_7_2011.jpg";
        Banners[10] = "pictures/appl_oil.jpg";
        Banners[11] = "pictures/lulc.jpg";
        Banners[12] = "pictures/transportation_jos.jpg";  
		Banners[13] = "pictures/local_gov.jpg";  
		Banners[14] = "pictures/risk_assesment.jpg";
        Banners[15] = "pictures/applications.jpg";
        Banners[16] = "pictures/geoapps_promo2.jpg";
		
// do the countdown
var today = new Date();

  var lunchdate = new Date("July 7, 2011");

  var countdays = Math.round((lunchdate - today) / (1000 * 60 * 60 * 24)); 

 
   var current_banner = 0;
   var no_of_banners =  Banners.length;
  
function rotate_banners()
{
    
// current_banner = Math.round(Math.random() * no_of_banners);
  if (current_banner >= no_of_banners)
     {
      current_banner = 0;
   //   current_banner = Math.round(Math.random() * no_of_banners);
     }

  //   document.nbanner.src = Banners[current_banner];  
   
     document.all.item("nbanner").innerHTML = "<img src='" + 
	          Banners[current_banner] + "' alt=''  width='400' height='300' border='0'>";      
   

     current_banner++ ; 
     if (current_banner >= no_of_banners)
     {
      current_banner = 0;
   //   current_banner = Math.round(Math.random() * no_of_banners);
     }
    
   setTimeout("rotate_banners()", 10 * 4000); 

 
  }