/**
 * Magento Enterprise Edition
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Magento Enterprise Edition License
 * that is bundled with this package in the file LICENSE_EE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://www.magentocommerce.com/license/enterprise-edition
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Varien
 * @package     js
 * @copyright   Copyright (c) 2009 Irubin Consulting Inc. DBA Varien (http://www.varien.com)
 * @license     http://www.magentocommerce.com/license/enterprise-edition
 */

/**
 * @classDescription simple Navigation with replacing old handlers
 * @param {String} id id of ul element with navigation lists
 * @param {Object} settings object with settings
 */
var mainNav = function() {

    var main = {
        obj_nav :   $(arguments[0]) || $("nav"),

        settings :  {
            show_delay      :   0,
            hide_delay      :   0,
            _ie6            :   /MSIE 6.+Win/.test(navigator.userAgent),
            _ie7            :   /MSIE 7.+Win/.test(navigator.userAgent)
        },

        init :  function(obj, level) {
            obj.lists = obj.childElements();
            obj.lists.each(function(el,ind){
                main.handlNavElement(el);
                if((main.settings._ie6 || main.settings._ie7) && level){
                    main.ieFixZIndex(el, ind, obj.lists.size());
                }
            });
            if(main.settings._ie6 && !level){
                document.execCommand("BackgroundImageCache", false, true);
            }
        },

        handlNavElement :   function(list) {
            if(list !== undefined){
                list.onmouseover = function(){
                    main.fireNavEvent(this,true);
                };
                list.onmouseout = function(){
                    main.fireNavEvent(this,false);
                };
                if(list.down("ul")){
					
                    main.init(list.down("ul"), true);
                }
            }
        },

        ieFixZIndex : function(el, i, l) {
            if(el.tagName.toString().toLowerCase().indexOf("iframe") == -1){
                el.style.zIndex = l - i;
            } else {
                el.onmouseover = "null";
                el.onmouseout = "null";
            }
        },

        fireNavEvent :  function(elm,ev) {
            if(ev){
				
                elm.addClassName("over");
                elm.down("a").addClassName("over");
                if (elm.childElements()[1]) {
                    main.show(elm.childElements()[1]);
                }
            } else {
                elm.removeClassName("over");
                elm.down("a").removeClassName("over");
                if (elm.childElements()[1]) {
                    main.hide(elm.childElements()[1]);
                }
            }
        },

        show : function (sub_elm) {
			
			parentObj = sub_elm.offsetParent;
		    topnavLeft = parentObj.offsetLeft;
			topnavWidth = parentObj.offsetWidth;
			submenuStaticWidth = 215;
			
			parentElementClass = sub_elm.parentNode.className;
			parentElementClassArr = parentElementClass.split(' ');
			menuClassLen = parentElementClassArr.length;
			
			if(menuClassLen >2){
				parentParentNav = parentElementClassArr[2];
				parentLastNav = parentElementClassArr[3];
				
				if(parentParentNav =='parent' && parentLastNav == 'last'){
					
					submenuleftPosition = Number(topnavWidth)-Number(submenuStaticWidth)+1;
					sub_elm.style.position="absolute";
					sub_elm.style.left = submenuleftPosition+"px";
					
				}
			
			}
			
            if (sub_elm.hide_time_id) {
                clearTimeout(sub_elm.hide_time_id);
            }
            sub_elm.show_time_id = setTimeout(function() {
                if (!sub_elm.hasClassName("shown-sub")) {
                    sub_elm.addClassName("shown-sub");
                }
            }, main.settings.show_delay);
        },

        hide : function (sub_elm) {
            
			
			
			if (sub_elm.show_time_id) {
                clearTimeout(sub_elm.show_time_id);
            }
            sub_elm.hide_time_id = setTimeout(function(){
                if (sub_elm.hasClassName("shown-sub")) {
                    sub_elm.removeClassName("shown-sub");
                }
				
            }, main.settings.hide_delay);
			
			var submenuClassneme = sub_elm.className;
			submenuClassneme = submenuClassneme.split(' ');
			submenuClassneme = submenuClassneme[0];
			sub_elm.className=submenuClassneme;
			sub_elm.removeAttribute('style');
			
        }

    };
    if (arguments[1]) {
        main.settings = Object.extend(main.settings, arguments[1]);
    }
    if (main.obj_nav) {
        main.init(main.obj_nav, false);
    }
};

document.observe("dom:loaded", function() {
    //run navigation without delays and with default id="#nav"
    //mainNav();

    //run navigation with delays
    mainNav("nav", {"show_delay":"100","hide_delay":"100"});
});