var randomnumber;
		var x;
		var books;
		
		books = 3;
		
		randomnumber = Math.floor(Math.random() * books);
		randomnumber = randomnumber + 1;
		
		switch(randomnumber)
			{
			case 1:
				document.write('<a href="http://supertri.com" target="_blank"><img src="http://trifind.net/b/SuperTri/SS-a1.gif"');
				document.write(' border="0"');
				document.write(' alt="a SuperTri distance triathlon at the grand coulee dam"></a>');
				break;
			case 2:
				document.write('<a href="http://supertri.com" target="_blank"><img src="http://trifind.net/b/SuperTri/A2.gif"');
				document.write(' border="0"');
				document.write(' alt="a SuperTri distance triathlon at the grand coulee dam"></a>');
				break;
			case 3:
				document.write('<a href="http://supertri.com" target="_blank"><img src="http://trifind.net/b/SuperTri/SS.gif"');
				document.write(' border="0"');
				document.write(' alt="a SuperTri distance triathlon at the grand coulee dam"></a>');
				break;
			}