var maxAdNo = 1
	
								var adNo
	
								var myAd = new Array()
								
								
								myAd[0] = '<a href="http://www.oil-tanks.co.uk/" target="_blank"><img src="images/fon_harlequin_ad.jpg" width="188" height="126" border="0"></a>'
								
								myAd[1] = '<a href="http://www.oil-tanks.co.uk/" target="_blank"><img src="images/fon_harlequin_ad.jpg" width="188" height="126" border="0"></a>'
								

								adNo = Math.round(Math.random() * maxAdNo)
				
								document.write(myAd[adNo])