/*
** v2.0.20060106
**
** gMenu is a customizable collection of JavaScript routines which can be used
** to quickly create platform independent drop down menus.
**
** gMenu has been tested on IE 6.0, Netscape 7.1, FireFox 1.0, and Opera 8.5
**
** Copyright (C) 2004-2005  Brain Book Software LLC (formfields.com, info@formfields.com)
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License
** as published by the Free Software Foundation; either version 2
** of the License, or (at your option) any later version.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
**
** See http://www.gnu.org/ for an up-to-date copy of the GPL.
*/

var IE_4 = document.all;
var NS_6 = document.getElementById && !document.all;

// The maximum depth of sub menus (not including the root menu)
var MAX_MENUS = 5;

// The number of milliseconds to delay before hiding a menu
var HIDE_MENU_DELAY = 500; //1000;

// The number of pixels to offset the top-left corner of the top menu from a
// root menu item.
var TOP_MENU_LEFT_OFFSET = 0;

// This array keeps track of whether the mouse is over a given menu.
var menuFocus = new Array();
for (i = 1; i <= MAX_MENUS; i++)
        menuFocus["menu" + i] = false;

var activeRootMenuId;

var curItemHasChildren = false;

var hideMenuCounter = 0;

function getPosOffset(what, offsetType) {
        var totalOffset= (offsetType == "left") ? what.offsetLeft : what.offsetTop;
        var parentEl = what.offsetParent;
        while (parentEl != null) {
                totalOffset = (offsetType == "left") ? totalOffset + parentEl.offsetLeft : totalOffset + parentEl.offsetTop;
                parentEl = parentEl.offsetParent;
        }
        return totalOffset;
}

function stripPx(x) {
        if (x.length <= 2)
                return x;
        return eval(x.substr(0,x.length-2));
}

function addDimensions(x1, x2) {
        return (stripPx(x1) + stripPx(x2)) + 'px';
}

// This is needed so that a user doesn't cause a js error by doing a mouse over on the menu
// before the menu has completely loaded.
function enableRootMenus() {
        var i = 1;
        while ( (rootMenu = document.getElementById("rootMenu" + (i++))) ) {
                rootMenu.disabled = false;
        }
}

function focusMenu(menu) {
        menuFocus[menu.id] = true;
}

function initGMenu() {
        /*html = '';
        for (i = 1; i <= MAX_MENUS; i++) {
                //html += '<div id="menuBase' + i + '" class="subMenuBase" style="position:absolute;top:0px;left:0px;visibility:hidden;">'
                //        + '<iframe frameborder="0" width="100%"></iframe></div>';
                html += '<div id="menu' + i + '" class="subMenu" style="position:absolute;top:0px;left:0px;visibility:hidden;" onmouseout="delayHideMenu(this);" onmouseover="focusMenu(this)">'
                        + '</div>';
        }
        document.body.innerHTML += html;*/
        //enableRootMenus();
}

function getHighlightedClass(curClass) {
        if (curClass.substr(0, 12) == 'subMenuItemL')
                return 'subMenuItemLeafHighlight';
        else
                return 'subMenuItemHighlight';
}

function getNotHighlightedClass(curClass) {
        if (curClass.substr(0, 12) == 'subMenuItemL')
                return 'subMenuItemLeaf';
        else
                return 'subMenuItem';
}

// Highlight current item and "unhighlight" other items in current menu
function setHighlighting(selectedNode) {
        for (i = 0; i < (selectedNode.parentNode).childNodes.length - 1; i++) {
                var curNode = (selectedNode.parentNode).childNodes[i];
                if (curNode.id == selectedNode.id) {
                        if (curNode.className != getHighlightedClass(curNode.className))
                                curNode.className = getHighlightedClass(curNode.className);
                } else {
                        if (curNode.className != getNotHighlightedClass(curNode.className))
                                curNode.className = getNotHighlightedClass(curNode.className);
                }
        }
}

function createLink(text, url, cssClass) {
        if (url == null)
                return text;
        //return '<a class="' + cssClass + '" href="' + url + '" style="height:100%;width:100%;">' + text + '</a>';
        return text;
}

// Fill in the sub menus. This is done every time a menu pops up.
function drawSubMenu(menuId, menuArray) {
        var menu = document.getElementById(menuId);
        var html = '';
        for (i = 0; i < menuArray.length; i++) {
                html += '<div id="' + menuId + "-" + i + '" class="' + (menuArray[i][2] == null ? 'subMenuItemLeaf' : 'subMenuItem"') + '"'
                        + ' onmouseover="' + (menuArray[i][2] == null ? '' : 'showMenu(\'' + menuId + '\', ' + menuArray[i][2] + ', this);') + 'highlightIfNeeded(this);"'
                        + (menuArray[i][1] != null ? ' style="cursor:pointer;" onclick="window.location=\'' + menuArray[i][1] + '\';"' : '')
                        + '>'
                        + createLink(menuArray[i][0], menuArray[i][1], 'subMenuItem')
                        + '</div>';
        }
        html += '<div class="menuBottom"></div>';
        menu.innerHTML = html;
        return menu;
}


// Shows a level 1 menu, right below the root menus.
// Had to adjust the top location for netscape?????????
function showTopMenu(curMenu, menuArray) {
        curMenu.className = curMenu.id + 'Highlight';
        if (menuFocus['menu1'])
                subMenu = document.getElementById('menu1');
        else
                subMenu = drawSubMenu('menu1', menuArray);
        //subMenu.style.top = curMenu.offsetParent.offsetTop + curMenu.offsetParent.offsetHeight;
        //subMenu.style.top = curMenu.offsetParent.offsetTop + curMenu.offsetTop + curMenu.offsetHeight;
        subMenu.style.top = getPosOffset(curMenu, "top") + (curMenu.offsetHeight + SUB_MENU_TOP_OFFSET) + "px";
        subMenu.style.left = getPosOffset(curMenu, "left") + TOP_MENU_LEFT_OFFSET + "px";
        //subMenu.style.left = curMenu.offsetParent.offsetLeft + curMenu.offsetLeft;
        //var subMenuBase = document.getElementById('menuBase1');
        //subMenuBase.childNodes[0].style.height = subMenu.offsetHeight;
        //subMenuBase.style.top = subMenu.style.top;
        //subMenuBase.style.left = subMenu.style.left;
        subMenu.style.visibility = 'visible';

        //subMenuBase.style.visibility = 'visible';
        menuFocus[curMenu.id] = true;
        activeRootMenuId = curMenu.id;
        curItemHasChildren = true;
        hideMenus2();
}

function highlightIfNeeded(curItem) {
        if (curItem.className != "subMenuItemHighlight")
                setHighlighting(curItem);
        curItemHasChildren = !(curItem.className.substr(0, 15) == "subMenuItemLeaf");
}

// Shows a level2..leveln menu, directly to the right of the selected item.
function showMenu(curMenuId, menuArray, curItem) {
        if (curItem.className == "subMenuItemHighlight")
                return;
        var curMenu = document.getElementById(curMenuId);
//        var subMenuId = 'menu' + (eval((curMenuId).substr(4,1)) + 1);
        var subMenuId = 'menu' + (eval((curMenuId).replace(/menu/, '')) + 1);
        //setHighlighting(curItem);
        //var subMenuBaseId = 'menuBase' + (eval((curMenuId).substr(4,1)) + 1);
        //var subMenuBase = document.getElementById(subMenuBaseId);
        var subMenu;
        if (menuFocus[subMenuId])
                subMenu = document.getElementById(subMenuId);
        else
                subMenu = drawSubMenu(subMenuId, menuArray);
        //subMenu.style.top = curItem.offsetParent.offsetTop + curItem.offsetTop;
        //subMenu.style.left = stripPx(curMenu.style.left) + curMenu.offsetWidth;
        subMenu.style.top = getPosOffset(curMenu, "top") + (curItem.offsetTop + SUB_SUB_MENU_TOP_OFFSET) + "px";
        subMenu.style.left = getPosOffset(curMenu, "left") + (curMenu.offsetWidth + SUB_SUB_MENU_LEFT_OFFSET) + "px";
        //subMenuBase.style.top = subMenu.style.top;
        //subMenuBase.childNodes[0].style.height = subMenu.offsetHeight;
        //subMenuBase.style.left = subMenu.style.left;
        subMenu.style.visibility = 'visible';

        //subMenuBase.style.visibility = 'visible';
//        var subSubMenuId = 'menu' + (eval((curMenuId).substr(4,1)) + 2);
        var subSubMenuId = 'menu' + (eval((curMenuId).replace(/menu/, '')) + 2);
        hideMenu(subSubMenuId, subMenuId);
}

// Recursively check all sub menus of the current menu.
// If the mouse has left a menu and all its sub menus then hide that menu.
function hideMenu(curMenuId, parentId) {
        var curMenu = document.getElementById(curMenuId);
        var hideChild = true;

//        var childId = 'menu' + (eval((curMenu.id).substr(4,1)) + 1);
        var childId = 'menu' + (eval((curMenu.id).replace(/menu/, '')) + 1);

        //var curMenuBaseId = 'menuBase' + (eval((curMenu.id).substr(4,1)));
        //var curMenuBase = document.getElementById(curMenuBaseId);

        var child = document.getElementById(childId);
        if (child != null) {
                hideChild = hideMenu(child.id, curMenu.id);
        }

        if (!menuFocus[curMenuId] && hideChild && (!menuFocus[parentId] || !curItemHasChildren)) {
                curMenu.style.visibility = 'hidden';
                return true;
        } else {
                return false;
        }

}

function hideMenus() {
        if (--hideMenuCounter > 0)
                return;
        hideMenus2();
}

function hideMenus2() {
        var i = 1;
        var menusHidden = hideMenu('menu1', activeRootMenuId);
        while ( (rootMenu = document.getElementById("rootMenu" + (i++))) ) {
                if ( (!menuFocus[rootMenu.id] && activeRootMenuId == rootMenu.id && menusHidden)
                     || (activeRootMenuId != rootMenu.id && rootMenu.className == rootMenu.id + "Highlight") ) {
                        rootMenu.className = rootMenu.id;
                }
        }
}

function delayHideMenu(menu) {
        menuFocus[menu.id] = false;
        hideMenuCounter++;
        setTimeout('hideMenus()', HIDE_MENU_DELAY);
}