/************************************************************************************************************
 Slide down menu
 Copyright (C) October 2005  DTHMLGoodies.com, Alf Magne Kalleland
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
 Dhtmlgoodies.com., hereby disclaims all copyright interest in this script
 written by Alf Magne Kalleland.
 
 Alf Magne Kalleland, 2010
 Owner of DHTMLgoodies.com
 
 ************************************************************************************************************/
var expandFirstItemAutomatically = false; // Expand first menu item automatically ?
var initMenuIdToExpand = false; // Id of menu item that should be initially expanded. the id is defined in the <li> tag.
var expandMenuItemByUrl = false; // Menu will automatically expand by url - i.e. if the href of the menu item is in the current location, it will expand

var initialMenuItemAlwaysExpanded = true; // NOT IMPLEMENTED YET
var dhtmlgoodies_slmenuObj;
var divToScroll = false;
var ulToScroll = false;
var divCounter = 1;
var otherDivsToScroll = new Array();
var divToHide = false;
var parentDivToHide = new Array();
var ulToHide = false;
var offsetOpera = 0;
if (navigator.userAgent.indexOf('Opera') >= 0) offsetOpera = 1;
var slideMenuHeightOfCurrentBox = 0;
var objectsToExpand = new Array();
var initExpandIndex = 0;
var alwaysExpanedItems = new Array();
var dg_activeItem = null;
var stopAnim = true;

function popMenusToShow() {
    var obj = divToScroll;
    var endArray = new Array();
    while (obj && obj.tagName != 'BODY') {
        if (obj.tagName == 'DIV' && obj.id.indexOf('slideDiv') >= 0) {
            var objFound = -1;
            for (var no = 0; no < otherDivsToScroll.length; no++) {
                if (otherDivsToScroll[no] == obj) {
                    objFound = no;
                }
            }
            if (objFound >= 0) {
                otherDivsToScroll.splice(objFound, 1);
            }
        }
        obj = obj.parentNode;
    }
}

function showSubMenu(e, inputObj) {
	stopAnim = (e != false) ? true : false;
	//trace(stopAnim)
    if (this && this.tagName) inputObj = this.parentNode;

    if (inputObj && inputObj.tagName == 'LI') {
        divToScroll = inputObj.getElementsByTagName('DIV')[0];
        for (var no = 0; no < otherDivsToScroll.length; no++) {
            if (otherDivsToScroll[no] == divToScroll) return;
        }
    }
    hidingInProcess = false;
    if (otherDivsToScroll.length > 0) {
        if (divToScroll) {
            if (otherDivsToScroll.length > 0) {
                popMenusToShow();
            }
            if (otherDivsToScroll.length > 0) {
                autoHideMenus();
                hidingInProcess = true;
            }
        }
    }
    if (divToScroll && !hidingInProcess) {
        divToScroll.style.display = '';
        otherDivsToScroll.length = 0;
        otherDivToScroll = divToScroll.parentNode;
        otherDivsToScroll.push(divToScroll);
        while (otherDivToScroll && otherDivToScroll.tagName != 'BODY') {
            if (otherDivToScroll.tagName == 'DIV' && otherDivToScroll.id.indexOf('slideDiv') >= 0) {
                otherDivsToScroll.push(otherDivToScroll);

            }
            otherDivToScroll = otherDivToScroll.parentNode;
        }
        ulToScroll = divToScroll.getElementsByTagName('UL')[0];
        if (divToScroll.style.height.replace('px', '') / 1 <= 1) scrollDownSub();
    }


    if (e || inputObj) {

        if (dg_activeItem) {
            dg_activeItem.className = dg_activeItem.className.replace('dhtmlgoodies_activeItem', '');
        }
        var aTags = inputObj.getElementsByTagName('A');
        if (aTags.length > 0) {
            aTags[0].className = aTags[0].className + ' dhtmlgoodies_activeItem';
            dg_activeItem = aTags[0];

        }

    }

    return false;

}



function autoHideMenus() {
    if (otherDivsToScroll.length > 0) {
        divToHide = otherDivsToScroll[otherDivsToScroll.length - 1];
        parentDivToHide.length = 0;
        var obj = divToHide.parentNode.parentNode.parentNode;
        while (obj && obj.tagName == 'DIV') {
            if (obj.id.indexOf('slideDiv') >= 0) parentDivToHide.push(obj);
            obj = obj.parentNode.parentNode.parentNode;
        }
        var tmpHeight = (divToHide.style.height.replace('px', '') / 1 - slideMenuHeightOfCurrentBox);
        if (tmpHeight < 0) tmpHeight = 0;
        if (slideMenuHeightOfCurrentBox) divToHide.style.height = tmpHeight + 'px';
        ulToHide = divToHide.getElementsByTagName('UL')[0];
        slideMenuHeightOfCurrentBox = ulToHide.offsetHeight;
        scrollUpMenu();
    } else {
        slideMenuHeightOfCurrentBox = 0;
        showSubMenu();
    }
}


function scrollUpMenu() {

    var height = divToHide.offsetHeight;
    height -= 15;
    if (height < 0) height = 0;
    divToHide.style.height = height + 'px';

    for (var no = 0; no < parentDivToHide.length; no++) {
        parentDivToHide[no].style.height = parentDivToHide[no].getElementsByTagName('UL')[0].offsetHeight + 'px';
    }
    if (height > 0) {
        setTimeout('scrollUpMenu()', 5);
    } else {
        divToHide.style.display = 'none';
        otherDivsToScroll.length = otherDivsToScroll.length - 1;
        autoHideMenus();
    }
}

function scrollDownSub() {
    if (divToScroll) {
        var height = divToScroll.offsetHeight / 1;
        var offsetMove = Math.min(15, (ulToScroll.offsetHeight - height));
		if(stopAnim){
			height += offsetMove;
		} else {
			height = ulToScroll.offsetHeight
		}
        divToScroll.style.height = height + 'px';

        for (var no = 1; no < otherDivsToScroll.length; no++) {
            var tmpHeight = otherDivsToScroll[no].offsetHeight / 1 + offsetMove;
            otherDivsToScroll[no].style.height = tmpHeight + 'px';
        }
        if (height < ulToScroll.offsetHeight) setTimeout('scrollDownSub()', 5);
        else {
            divToScroll = false;
            ulToScroll = false;
            if (objectsToExpand.length > 0 && initExpandIndex < (objectsToExpand.length - 1)) {
                initExpandIndex++;

                showSubMenu(false, objectsToExpand[initExpandIndex]);
            }
        }
    }
}

function initSubItems(inputObj, currentDepth) {
    divCounter++;
    var div = document.createElement('DIV'); // Creating new div
    div.style.overflow = 'hidden';
    div.style.position = 'relative';
    div.style.display = 'none';
    div.style.height = '1px';
    div.id = 'slideDiv' + divCounter;
    div.className = 'slideMenuDiv' + currentDepth;
    inputObj.parentNode.appendChild(div); // Appending DIV as child element of <LI> that is parent of input <UL>
    div.appendChild(inputObj); // Appending <UL> to the div
    var menuItem = inputObj.getElementsByTagName('LI')[0];
    while (menuItem) {
        if (menuItem.tagName == 'LI') {
            var aTag = menuItem.getElementsByTagName('A')[0];
            aTag.className = 'slMenuItem_depth' + currentDepth;
            var subUl = menuItem.getElementsByTagName('UL');
            if (subUl.length > 0) {
                initSubItems(subUl[0], currentDepth + 1);
            }
            aTag.onclick = showSubMenu;
        }
        menuItem = menuItem.nextSibling;
    }
}

function initSlideDownMenu(id) {
    dhtmlgoodies_slmenuObj = document.getElementById('dhtmlgoodies_slidedown_menu');
    dhtmlgoodies_slmenuObj.style.visibility = 'visible';
    var mainUl = dhtmlgoodies_slmenuObj.getElementsByTagName('UL')[0];
    var mainMenuItem = mainUl.getElementsByTagName('LI')[0];
    mainItemCounter = 1;
    while (mainMenuItem) {
        if (mainMenuItem.tagName == 'LI') {
            var aTag = mainMenuItem.getElementsByTagName('A')[0];
            aTag.className = 'slMenuItem_depth1';
            var subUl = mainMenuItem.getElementsByTagName('UL');
            if (subUl.length > 0) {
                mainMenuItem.id = 'mainMenuItem' + mainItemCounter;
                initSubItems(subUl[0], 2);
                aTag.onclick = showSubMenu;
                mainItemCounter++;
            }
        }
        mainMenuItem = mainMenuItem.nextSibling;
    }
	
    if (location.search.indexOf('mainMenuItemToSlide') >= 0) {
		
        var items = location.search.split('&');
        for (var no = 0; no < items.length; no++) {
            if (items[no].indexOf('mainMenuItemToSlide') >= 0) {
                values = items[no].split('=');
                showSubMenu(false, document.getElementById('mainMenuItem' + values[1]));
                initMenuIdToExpand = false;
            }
        }
    } else if (expandFirstItemAutomatically > 0) {
        if (document.getElementById('mainMenuItem' + expandFirstItemAutomatically)) {
            showSubMenu(false, document.getElementById('mainMenuItem' + expandFirstItemAutomatically));
            initMenuIdToExpand = false;
        }
    }

    if (expandMenuItemByUrl) {
        var aTags = dhtmlgoodies_slmenuObj.getElementsByTagName('A');
        for (var no = 0; no < aTags.length; no++) {
            var hrefToCheckOn = aTags[no].href;
            if (location.href.indexOf(hrefToCheckOn) >= 0 && hrefToCheckOn.indexOf('#') < hrefToCheckOn.length - 1) {
                initMenuIdToExpand = false;
                var obj = aTags[no].parentNode;
                while (obj && obj.id != 'dhtmlgoodies_slidedown_menu') {
                    if (obj.tagName == 'LI') {
                        var subUl = obj.getElementsByTagName('UL');
                        if (initialMenuItemAlwaysExpanded) alwaysExpanedItems[obj.parentNode] = true;
                        if (subUl.length > 0) {
                            objectsToExpand.unshift(obj);
                        }
                    }
                    obj = obj.parentNode;
                }
                showSubMenu(false, objectsToExpand[0]);
                break;
            }
        }
    }
	initMenuIdToExpand = id;
	
    if (initMenuIdToExpand) {
		//trace('onLoad: '+initMenuIdToExpand)
        objectsToExpand = new Array();
        //var obj = document.getElementById('mainMenuItem'+initMenuIdToExpand)
		var obj = document.getElementById(initMenuIdToExpand).parentNode;
        while (obj && obj.id != 'dhtmlgoodies_slidedown_menu') {
            if (obj.tagName == 'LI') {
                var subUl = obj.getElementsByTagName('UL');
                if (initialMenuItemAlwaysExpanded) alwaysExpanedItems[obj.parentNode] = true;
                if (subUl.length > 0) {
                    objectsToExpand.unshift(obj);
                }
            }
            obj = obj.parentNode;
        }

        showSubMenu(false, objectsToExpand[0]);

    }
}