var $j = jQuery.noConflict();


$j(document).ready(function() {

	var cur_page = $j('#current_page').attr('cat');

	moving = false;

	menu_ext = $j('#menu-tab-0');
	menu_ext_item = $j('#menu-tab-1');
	menu_tiers = $j('#menu-tab-2');
	
	back_arrow = $j('#magextend-style-nav-back-arrow');
	back_arrow.hide();

	if(cur_page == 'ok')
	{
		menu_ext_item.hide();
		
	}
	else
	{
		menu_ext.hide();
		menu_tiers.hide();
		show_back_button();
		
	}
	
	
});

function arrow_appear(){
	new Effect.Appear('magextend-style-nav-back-arrow', { duration: 0.5, 
		afterFinish:function(){
			moving=false;
		}
	});
}


function show_back_button(){

	new Effect.Move('magextend-style-nav-back', { x: -33, y: -33, mode: 'relative', 
		afterFinish:function() {
			arrow_appear();
		}
	});
}


function show_menu_item(){
	if(!moving){
		moving=true;
		new Effect.BlindUp('menu-tab-0');
		new Effect.SlideUp('menu-tab-2', {afterFinish:function() {}});
		new Effect.SlideDown('menu-tab-1');
		show_back_button();

	}
}


function hide_menu_item(){
	if(!moving){
		moving=true;
		new Effect.Fade('magextend-style-nav-back-arrow', { duration: 0.5,
	 		afterFinish:function() {
		 		new Effect.Move('magextend-style-nav-back', { x: +33, y: +33, mode: 'relative',  						afterFinish:function() {
		 				moving=false;
		 			}
				});
			}
		});
		new Effect.SlideDown('menu-tab-0');
		new Effect.BlindDown('menu-tab-2');
		new Effect.BlindUp('menu-tab-1');
	}
}