date = new Date();
rnd = (date.getSeconds())%6;

function img()
{
 switch(rnd)
 {
  case 0:
  document.write('<img src="newl.jpg" width=759 height=113>'); break;

  case 1:
  document.write('<img src="newl1.jpg" width=759 height=113>'); break;

  case 2:
  document.write('<img src="newl2.jpg" width=759 height=113>'); break;

  case 3:
  document.write('<img src="newl3.jpg" width=759 height=113>'); break;
  
  case 4:
  document.write('<img src="newl4.jpg" width=759 height=113>'); break;
  
  case 5:
  document.write('<img src="newl5.jpg" width=759 height=113>'); break;
 }
}