var removeFirst  = 0;
	var removeSecond = 0;
	var show 		 = 0;

	function navClick(number)
	{	
		if(number == 1)
		{	
			show = 1;
			removeFirst = 2;
			removeSecond = 3;
		}
		else if(number == 2)
		{
			show = 2;
			removeFirst = 1;
			removeSecond = 3;
		}
		else if(number == 3)
		{
			show = 3;
			removeFirst = 1;
			removeSecond = 2;
		}
		
		document.getElementById("aba"+removeFirst+"").style.display = "none";	
		document.getElementById("aba"+removeSecond+"").style.display = "none";
		
		document.getElementById("aba"+show+"").style.display = "block";	
	}