function navigate(item)
{
	var menu = item;
	//alert(menu);
	if(menu == "accomm")
	{
		document.getElementById('accomm').style.visibility='visible';
	}else{
		document.getElementById('accomm').style.visibility='hidden';
	}
	
	if(menu == "fac")
	{
		document.getElementById('fac').style.visibility='visible';
	}else{
		document.getElementById('fac').style.visibility='hidden';
	}
	
	if(menu == "att")
	{
		document.getElementById('att').style.visibility='visible';
	}else{
		document.getElementById('att').style.visibility='hidden';
	}
	
	
	
	if(menu == "")
	{
		document.getElementById('accomm').style.visibility='hidden';
		document.getElementById('fac').style.visibility='hidden';
		document.getElementById('att').style.visibility='hidden';
	}

}