var ale = Math.floor(Math.random() * 4);
	document.writeln('<table><tr>');
	switch(ale)
	{
	case 0:
			/*document.writeln('<td><a href="http://www.oilgae.com/club/index.php"><img src="/adv/join_1.jpg"></a><td>');*/
			document.writeln('<td><a href="http://www.oilgae.com/ref/report/report.html"><img src="http://www.oilgae.com/adv/oc.gif"></a><td>');
			
			
			break;    
	case 1:
	
			document.writeln('<td><a href="http://www.oilgae.com/ref/report/co2_capture/co2_capture.html"><img src="http://www.oilgae.com/adv/algae_cs.jpg"></a><td>');
			/*document.writeln('<td><a href="http://www.oilgae.com/club/index.php"><img src="/adv/con_join_2.jpg"></a></td>');*/
			break;
	
	case 2:
	
			document.writeln('<td><a href="http://www.oilgae.com/ref/report/co2_capture/co2_capture.html"><img src="http://www.oilgae.com/adv/algae_cs.jpg"></a><td>');
		/*	document.writeln('<td><a href="http://www.oilgae.com/club/index.php"><img src="/adv/join_blue.jpg"></a></td>');*/
			break;
	
	case 3:
			document.writeln('<td><a href="http://www.oilgae.com/ref/report/report.html"><img src="http://www.oilgae.com/adv/oc.gif"></a><td>');
			/*document.writeln('<td><a href="http://www.oilgae.com/club/index.php"><img src="/adv/join_free.jpg"></a></td>');*/
			break;  
	}
	document.writeln('</tr></table>');