function RandomNumber() 
{
  var today = new Date();
  var num= Math.abs(Math.sin(today.getTime()/1000));
  return num;
}

function RandomGraphicsTop(){
  var x = RandomNumber();


if (x > .88){
document.write('<img src="images/home1.jpg" width="780" height="266">'); return; 
}
if (x > .77){
document.write('<img src="images/home2.jpg" width="780" height="266">'); return; 
}
if (x > .66){
document.write('<img src="images/home3.jpg" width="780" height="266">'); return; 
}
if (x > .55){
document.write('<img src="images/home4.jpg" width="780" height="266">'); return; 
}
  if (x > .44){
document.write('<img src="images/home1.jpg" width="780" height="266">'); return; 
}
  if (x > .33){
document.write('<img src="images/home2.jpg" width="780" height="266">'); return; 
}
  if (x > .22){
document.write('<img src="images/home3.jpg" width="780" height="266">'); return; 
}
  if (x > .11){
document.write('<img src="images/home4.jpg" width="780" height="266">'); return; 
}
  if (x > 0){
document.write('<img src="images/home1.jpg" width="780" height="266">'); return; 
}
}//FUNCTION
RandomGraphicsTop();