var flag_show = null;

function show(list){
	var obj = '#' + list;
	var prev_show;
	
	if(flag_show == null){
		$(obj).fadeIn('450', function(){
			var cont_bot_top = $("#main_bot").height() - 235;
            $("#main_content_bot").css("top", cont_bot_top);						  
		});
		flag_show = list;
	} else {
		if(flag_show != list){
			prev_show = '#' + flag_show;
			$(prev_show).fadeOut('450', function(){
				$(obj).fadeIn('450', function(){
					var cont_bot_top = $("#main_bot").height() - 235;
                    $("#main_content_bot").css("top", cont_bot_top);					  
				});								 
			});
			flag_show = list;
		} else {
			$(obj).fadeOut('450', function(){
				var cont_bot_top = $("#main_bot").height() - 235;
                $("#main_content_bot").css("top", cont_bot_top);				   
			});
			flag_show = null;	
		}
	}
}