/***********************************************************************************************

    Copyright (c) 2005 - Alf Magne Kalleland post@dhtmlgoodies.com

    Get this and other scripts at www.dhtmlgoodies.com

    You can use this script freely as long as this copyright message is kept intact.

    ***********************************************************************************************/
    var menuAlignment = 'left';    // Align menu to the left or right?
    var topMenuSpacer = 0; // Horizontal space(pixels) between the main menu items
    var activateSubOnClick = false; // if true-> Show sub menu items on click, if false, show submenu items onmouseover
    var leftAlignSubItems = false;     // left align sub items t

    var activeMenuItem = false;    // Don't change this option. It should initially be false
    var activeTabIndex = 1;    // Index of initial active tab    (0 = first tab) - If the value below is set to true, it will override this one.
    var rememberActiveTabByCookie = false;    // Set it to true if you want to be able to save active tab as cookie

    var MSIE = navigator.userAgent.indexOf('MSIE')>=0?true:false;
    var Opera = navigator.userAgent.indexOf('Opera')>=0?true:false;
    var navigatorVersion = navigator.appVersion.replace(/.*?MSIE ([0-9]\.[0-9]).*/g,'<script _wpro_type="text/javascript" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" _wpro_type="text/wpro" type="text/wpro">')/1;

    /*
    These cookie functions are downloaded from
    http://www.mach5.com/support/analyzer/manual/html/General/CookiesJavaScript.htm
    */
    function Get_Cookie(name) {
       var start = document.cookie.indexOf(name+"=");
       var len = start+name.length+1;
       if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
       if (start == -1) return null;
       var end = document.cookie.indexOf(";",len);
       if (end == -1) end = document.cookie.length;
       return unescape(document.cookie.substring(len,end));
    }
    // This function has been slightly modified
    function Set_Cookie(name,value,expires,path,domain,secure) {
        expires = expires * 60*60*24*1000;
        var today = new Date();
        var expires_date = new Date( today.getTime() + (expires) );
        var cookieString = name + "=" +escape(value) +
           ( (expires) ? ";expires=" + expires_date.toGMTString() : "") +
           ( (path) ? ";path=" + path : "") +
           ( (domain) ? ";domain=" + domain : "") +
           ( (secure) ? ";secure" : "");
        document.cookie = cookieString;
    }

    function showHide()
    {
        if(activeMenuItem){
            activeMenuItem.className = 'inactiveMenuItem';
            var theId = activeMenuItem.id.replace(/[^0-9]/g,'');
            document.getElementById('submenu_'+theId).style.display='none';
            var img = activeMenuItem.getElementsByTagName('IMG');
            if(img.length>0)img[0].style.display='none';
        }

        var img = this.getElementsByTagName('IMG');
        if(img.length>0)img[0].style.display='inline';

        activeMenuItem = this;
        this.className = 'activeMenuItem';
        var theId = this.id.replace(/[^0-9]/g,'');
        document.getElementById('submenu_'+theId).style.display='block';



        if(rememberActiveTabByCookie){
            Set_Cookie('dhtmlgoodies_tab_menu_tabIndex','index: ' + (theId-1),100);
        }
    }

    function initMenu()
    {
        var mainMenuObj = document.getElementById('mainMenu');
        var menuItems = mainMenuObj.getElementsByTagName('A');
        if(document.all){
            mainMenuObj.style.visibility = 'hidden';
            document.getElementById('submenu').style.visibility='hidden';
        }
        if(rememberActiveTabByCookie){
            var cookieValue = Get_Cookie('dhtmlgoodies_tab_menu_tabIndex') + '';
            cookieValue = cookieValue.replace(/[^0-9]/g,'');
            if(cookieValue.length>0 && cookieValue<menuItems.length){
                activeTabIndex = cookieValue/1;
            }
        }

        var currentLeftPos = 15;
        for(var no=0;no<menuItems.length;no++){
            if(activateSubOnClick)menuItems[no].onclick = showHide; else menuItems[no].onmouseover = showHide;
            menuItems[no].id = 'mainMenuItem' + (no+1);
            if(menuAlignment=='left')
                menuItems[no].style.left = currentLeftPos + 'px';
            else
                menuItems[no].style.right = currentLeftPos + 'px';
            currentLeftPos = currentLeftPos + menuItems[no].offsetWidth + topMenuSpacer;

            var img = menuItems[no].getElementsByTagName('IMG');
            if(img.length>0){
                img[0].style.display='none';
                if(MSIE && !Opera && navigatorVersion<7){
                    img[0].style.bottom = '-1px';
                    img[0].style.right = '-1px';
                }
            }

            if(no==activeTabIndex){
                menuItems[no].className='activeMenuItem';
                activeMenuItem = menuItems[no];
                var img = activeMenuItem.getElementsByTagName('IMG');
                if(img.length>0)img[0].style.display='inline';

            }else menuItems[no].className='inactiveMenuItem';
            if(!document.all)menuItems[no].style.bottom = '-1px';
            if(MSIE && navigatorVersion < 6)menuItems[no].style.bottom = '-2px';


        }

        var mainMenuLinks = mainMenuObj.getElementsByTagName('A');

        var subCounter = 1;
        var parentWidth = mainMenuObj.offsetWidth;
        while(document.getElementById('submenu_' + subCounter)){
            var subItem = document.getElementById('submenu_' + subCounter);

            if(leftAlignSubItems){
                // No action
            }else{
                var leftPos = mainMenuLinks[subCounter-1].offsetLeft;
                document.getElementById('submenu_'+subCounter).style.paddingLeft =  leftPos + 'px';
                subItem.style.position ='absolute';
                if(subItem.offsetWidth > parentWidth){
                    leftPos = leftPos - Math.max(0,subItem.offsetWidth-parentWidth);
                }
                subItem.style.paddingLeft =  leftPos + 'px';
                subItem.style.position ='static';


            }
            if(subCounter==(activeTabIndex+1)){
                subItem.style.display='block';
            }else{
                subItem.style.display='none';
            }

            subCounter++;
        }
        if(document.all){
            mainMenuObj.style.visibility = 'visible';
            document.getElementById('submenu').style.visibility='visible';
        }
        document.getElementById('submenu').style.display='block';
    }
    window.onload = initMenu;