var randomnumber;
		var x;
		var books;
		
		books = 4;
		
		randomnumber = Math.floor(Math.random() * books);
		randomnumber = randomnumber + 1;
		
		switch(randomnumber)
			{
			case 1:
				document.write('<iframe src="http://www.trifind.net/b/REV-3/side-2010/1.html" width=130 height=160 frameborder=0 scrolling=no marginwidth=0 marginheight=0></iframe>');
				document.write('<br><br><a href="http://www.ezbikeproducts.com/ez-bike-stand-description/" target="_blank"><img src="http://trifind.net/b/ez-bike-stand/side2.jpg"');
				document.write(' border="0"');
				document.write(' alt="The New EZ Bike Stand"></a>');
				break;
			case 2:
				document.write('<iframe src="http://www.trifind.net/b/best-of-the-us/2010/side/GA1.html" width=130 height=130 frameborder=0 scrolling=no marginwidth=0 marginheight=0></iframe>');
				document.write('<br><br><iframe src="http://www.trifind.net/b/REV-3/side-2010/1.html" width=130 height=160 frameborder=0 scrolling=no marginwidth=0 marginheight=0></iframe>');
				break;
			case 3:
				document.write('<br><br><br><a href="http://www.tri2remember.com/t2r-races.html" target="_blank"><img src="http://trifind.net/b/T2R-collins-hill/side.gif"');
				document.write(' border="0"');
				document.write(' alt="tri2remember collins hill"></a>');
				break;
			case 4:
				document.write('<iframe src="http://www.trifind.net/b/best-of-the-us/2010/side/GA2.html" width=130 height=130 frameborder=0 scrolling=no marginwidth=0 marginheight=0></iframe>');
				document.write('<br><br><a href="http://www.ezbikeproducts.com/ez-bike-stand-description/" target="_blank"><img src="http://trifind.net/b/ez-bike-stand/side2.jpg"');
				document.write(' border="0"');
				document.write(' alt="The New EZ Bike Stand"></a>');
				break;
			}