function showhide(menu) {
			main_menu_1.style.display = "none";
			main_menu_2.style.display = "none";
			main_menu_3.style.display = "none";	
			main_menu_4.style.display = "none";	
			main_menu_5.style.display = "none";	
			main_menu_6.style.display = "none";	
			main_menu_7.style.display = "none";	
			menu.style.display = "";
		}
		function show_menu_click(a,b)
		{
			main_menu_img_1.src = "/images/new_top_menu_1.gif"
			main_menu_img_2.src = "/images/new_top_menu_2.gif"
			main_menu_img_3.src = "/images/new_top_menu_3.gif"
			main_menu_img_4.src = "/images/new_top_menu_8.gif"
			main_menu_img_5.src = "/images/new_top_menu_5.gif"
			main_menu_img_6.src = "/images/new_top_menu_6.gif"
			main_menu_img_7.src = "/images/new_top_menu_7.gif"	
			a.src = b;
		}