function closedisplays()
{ 

document.getElementById('categoryA1').style.display = "none"; 
document.getElementById('categoryA2').style.display = "none"; 
document.getElementById('categoryA3').style.display = "none";
document.getElementById('categoryA4').style.display = "none"; 
document.getElementById('categoryA5').style.display = "none"; 
document.getElementById('categoryA6').style.display = "none"; 
document.getElementById('categoryA7').style.display = "none"; 
document.getElementById('categoryB1').style.display = "none"; 
document.getElementById('categoryB2').style.display = "none"; 
document.getElementById('categoryB3').style.display = "none"; 
}


	function changeDisplay(menuid)
	{
		var obj1, obj2, x
		
closedisplays()
		
		for (var x = 1; x <= 50; x++)
		{
				
		try
				{
					obj1=document.getElementById('' + menuid + x);				
					//obj2=document.getElementById('colb' + categoryid);	
					obj1.style.display=( (obj1.style.display =='') ? 'inline' : '');
					
					//obj2.style.visibility=( (obj2.style.visibility =='hidden') ? 'visible' : 'hidden');  
				}
	
				catch(e)
				{                     
					
				}            			
		}	
		
		
	
	}