function showSubNav(id) {
	
	var curPos = ($("#main"+id).css("margin-top") == "22px") ? "down" : "up";
	
	$(".mainNavigation").each(function() {
		if ($(this).css("margin-top") == "22px") {
			$(this).animate({ marginTop: "0px" }, 300);
			nid = $(this).attr("id").replace("main","");
			$("#secNavL"+nid).animate({opacity:0},150,function() { $(this).hide(); });
			$("#secNavR"+nid).animate({opacity:0},150,function() { $(this).hide(); });
		}
	})
	
	if (curPos == "up") {
		$('#main'+id).animate({ marginTop: "22px" }, 300, function() {
			$("#secNavL"+id).css("display","block");
			$("#secNavR"+id).css("display","block");
			offset = $("#main"+id).position();
			$("#secNavR"+id).css("top",(offset.top+24));
			$("#secNavR"+id).css("left",(offset.left+$("#main"+id).outerWidth()+22));
			$("#secNavL"+id).css("top",(offset.top+24));
			$("#secNavL"+id).css("left",(offset.left-$("#secNavL"+id).width()));
			$("#secNavL"+id).animate({opacity:1},150);
			$("#secNavR"+id).animate({opacity:1},150);			
		});
	}
}