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

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 = 15; // 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 = 0;	// Index of initial active tab	(0 = first tab) - If the value below is set to true, it will override this one.
var rememberActiveTabByCookie = true;	// Set it to true if you want to be able to save active tab as cookie

var MSIE = (navigator.userAgent.indexOf('MSIE')>=0);
var Opera = (navigator.userAgent.indexOf('Opera')>=0);
var navigatorVersion = navigator.appVersion.replace(/.*?MSIE ([0-9]\.[0-9]).*/g,'$1')/1;

var d = document;
function get(id) {
    return d.getElementById(id);
}
    
/*
These cookie functions are downloaded from 
http://www.mach5.com/support/analyzer/manual/html/General/CookiesJavaScript.htm
*/	
function Get_Cookie(name) {
   var start = d.cookie.indexOf(name+"="); 
   var len = start+name.length+1; 
   if ((!start) && (name != d.cookie.substring(0,name.length))) return null; 
   if (start == -1) return null; 
   var end = d.cookie.indexOf(";",len); 
   if (end == -1) end = d.cookie.length; 
   return unescape(d.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" : ""); 
    d.cookie = cookieString; 
}	

function showHide()
{
    if(activeMenuItem){
        activeMenuItem.className = 'inactiveMenuItem'; 	
        var theId = activeMenuItem.id.replace(/[^0-9]/g,'');
        get('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 = Number(this.id.replace(/[^0-9]/g,''));
    get('submenu_'+theId).style.display='block';
    
    if (theId >= 1 && theId <= 4)
        d.tab.src="_images_/imagemenu-top_"+theId+".jpg";
    
    if(rememberActiveTabByCookie){
        Set_Cookie('dhtmlgoodies_tab_menu_tabIndex','index: ' + (theId-1),100);
    }
}

function initMenu()
{
    var mainMenuObj = get('mainMenu');
    var menuItems = mainMenuObj.getElementsByTagName('Area');
    //alert(menuItems[1].href);
    if(d.all){
        mainMenuObj.style.visibility = 'hidden';
        get('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){
                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(!d.all)menuItems[no].style.bottom = '-1px';
        if(MSIE && navigatorVersion < 6)menuItems[no].style.bottom = '-2px';
        

    }		
    
    var mainMenuLinks = mainMenuObj.getElementsByTagName('Area');
    
    var subCounter = 1;
    var parentWidth = mainMenuObj.offsetWidth;
    while(get('submenu_' + subCounter)){
        var subItem = get('submenu_' + subCounter);
        
        if(leftAlignSubItems){
            // No action
        }else{							
            var leftPos = mainMenuLinks[subCounter-1].offsetLeft;
            get('submenu_'+subCounter).style.paddingLeft =  leftPos + 'px';
            subItem.style.position ='absolute';
            if(subItem.offsetWidth > parentWidth){
                leftPos = leftPos - Math.max(0,subItem.offsetWidth-parentWidth); 	
            }
            leftPos = 5;//Fixed to start teh submenus for left:Om
            subItem.style.paddingLeft =  leftPos + 'px';
            subItem.style.position ='static';
                
        }
        if(subCounter==(activeTabIndex+1)){
            subItem.style.display='block';
            d.tab.src="_images_/imagemenu-top_"+(activeTabIndex+1)+".jpg";//Active the tab as per the Cookie value:Om
            //alert(activeTabIndex);
        }else{
            subItem.style.display='none';
        }
        
        subCounter++;
    }
    if(d.all){
        mainMenuObj.style.visibility = 'visible';
        get('submenu').style.visibility='visible';
    }		
    get('submenu').style.display='block';
}