function hostedBlackberry()				
			
			
					{												
						
						document.getElementById("BES").style.visibility = 'visible';
						document.getElementById("BES").style.display = 'block';
						document.getElementById("what-is-hosted-blackberry").style.visibility = 'hidden';
						document.getElementById("what-is-hosted-blackberry").style.display = 'none';						
						document.getElementById("how-to-buy").style.visibility = 'hidden';
						document.getElementById("how-to-buy").style.display = 'none'; 						
						}	
						
			function whatIsHostedBlackberry()				
			
			
					{				

					
					
   						document.getElementById("BES").style.visibility = 'hidden';
						document.getElementById("BES").style.display = 'none';		
					    document.getElementById("what-is-hosted-blackberry").style.visibility = 'visible';
						document.getElementById("what-is-hosted-blackberry").style.display = 'block';				
						document.getElementById("how-to-buy").style.visibility = 'hidden';
						document.getElementById("how-to-buy").style.display = 'none'; }		
			
			
			function howToBuy()				
			
			
					{													
					
   						document.getElementById("BES").style.visibility = 'hidden';
						document.getElementById("BES").style.display = 'none';		
					    document.getElementById("what-is-hosted-blackberry").style.visibility = 'hidden';
						document.getElementById("what-is-hosted-blackberry").style.display = 'none';				
						document.getElementById("how-to-buy").style.visibility = 'visible';
						document.getElementById("how-to-buy").style.display = 'block'; }