// build navigation on domready
window.addEvent("domready", function() {
	
	// only for IE 6
	if (window.ie6) {
		
		// find main menu links
		var main_menu = $("nav-main");
		var menu_links = main_menu.getElements("td");
		
		// add mouse events to menu links
		menu_links.each(function(menu_link, index) {
			
			// check if menu link has sub-menu and is not active
			menu_link.sub_menu = menu_link.getElement("ul");
			if (menu_link.sub_menu && !menu_link.hasClass("active")) {
				
				// add mouse over event to show sub-menu
				menu_link.addEvent("mouseenter", function() {
					menu_link.sub_menu.setStyle("display", "block");
				});
				
				// add mouse out event to hide sub-menu
				menu_link.addEvent("mouseleave", function() {
					(function() {
						menu_link.sub_menu.setStyle("display", "none");
					}).delay(1000);
				});
				
			}
			
		});
		
	}
	
});