function startTime()
{
var today=new Date()
var h=today.getHours()
var m=today.getMinutes()
var s=today.getSeconds()
// add a zero in front of numbers<10
m=checkTime(m)
s=checkTime(s)
document.getElementById('clock').innerHTML=h+":"+m+":"+s
t=setTimeout('startTime()',500)
}

function checkTime(i)
{
if (i<10) 
  {i="0" + i}
  return i
}

function courseads() {
//
// Type the number of images you are rotating.
Rotate = 2;
// detail the urls and image sources. 
// a = '<center><a href="courses-2009-graphicswe.php" target="_self"><img class="courses" src="images/courses/2009-auto.jpg" alt="Call or email us today."></a></center>';
a = '<center><a href="courses-basics.php" target="_self"><img class="courses" src="images/courses/2009-begin.jpg" alt="Call or email us today."></a></center>';
b = '<center><a href="courses-2009-murals.php" target="_self"><img class="courses" src="images/courses/2009-murals.jpg" alt="Call or email us today."></a></center>';
var r = 0;
r = Math.ceil(Math.random() * Rotate);
if (r==1)
	{document.write(a);}
else if (r==2)
	{document.write(b);}
else if (r==3)
	{document.write(c);}
}