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

* Tab Menu- By Alf Magne Kalleland post@removethisdhtmlgoodies.com

* Website Address: http://www.dhtmlgoodies.com

* Script featured/ available at Dynamic Drive: http://www.dynamicdrive.com/

* This notice must stay intact for use

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

		

	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 = true; 	// 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

	

	/*

	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(/[^\d]/g,'');

			document.getElementById('submenu_'+theId).style.display='none';

		}



		

		activeMenuItem = this;		

		this.className = 'activeMenuItem';

		var theId = this.id.replace(/[^\d]/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 subMenuObj = document.getElementById('submenu'); //DD added line

		mainMenuObj.style.visibility=subMenuObj.style.visibility="visible" //DD added line

		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(/[^\d]/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);

			menuItems[no].style.left = currentLeftPos + 'px';

			currentLeftPos = currentLeftPos + menuItems[no].offsetWidth + topMenuSpacer; 

			if(no==activeTabIndex){

				menuItems[no].className='activeMenuItem';

				activeMenuItem = menuItems[no];

			}else menuItems[no].className='inactiveMenuItem';

			if(!document.all)menuItems[no].style.bottom = '-1px';

			

		}		

		

		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;