var currentNav = '';
var options = {};
function selectNav(id){
	if(currentNav != id){
		if(currentNav != ''){
			$('#' + currentNav).attr('class','off');	
			$('#' + currentNav + 'subnav').hide();
		}
		//$('#' + id + 'subnav').show('blind',options,500);
		$('#' + id + 'subnav').show();
		$('#' + id).attr('class','on');
		currentNav = id;			
	}
}