function show_img (n) {
					var
					img = document.getElementById('gallery_img');
					png = document.getElementById('header_menu');
					a_loc = document.getElementById('gellery_loc')
					switch (n) {
						case 15:
						img.className = "menu_img4";
						png.className = "header_menu_3";
						a_loc.className = "gallery_loc_4";
						break;
						
						case 2:
						img.className = "menu_img1";
						png.className = "header_menu_1";
						a_loc.className = "gallery_loc_1"
						break;
						
						case 29:
						img.className = "menu_img6";
						png.className = "header_menu_5";
						a_loc.className = "gallery_loc_6"
						break;
						
						case 22:
						img.className = "menu_img9";
						png.className = "header_menu_4";
						a_loc.className = "gallery_loc_9"
						break;
						
						case 11:
						img.className = "menu_img7";
						png.className = "header_menu_2";
						a_loc.className = "gallery_loc_7"
						break;
						
						case 2:
						img.className = "menu_img1";
						png.className = "header_menu_1";
						a_loc.className = "gallery_loc_1"
						break;
						
						case 7:
						img.className = "menu_img7";
						png.className = "header_menu_7";
						a_loc.className = "gallery_loc_7"
						break;
						
						case 8:
						img.className = "menu_img8";
						png.className = "header_menu_8";
						a_loc.className = "gallery_loc_8"
						break;
						
						case 9:
						img.className = "menu_img9";
						png.className = "header_menu_9";
						a_loc.className = "gallery_loc_9"
						break;
						
						default:
						img.className = "menu_img6";
						png.className = "header_menu_6";
						a_loc.className = "gallery_loc_6"
						break;
					}
				}