var menu_tabs=	{	subvak:[], last_accessed_tab:null,
				revealsubmenu:function(curtabref)
				{	this.hideallsubs()
					if (this.last_accessed_tab!=null)
					this.last_accessed_tab.className=""
					if (curtabref.getAttribute("rel"))
					document.getElementById(curtabref.getAttribute("rel")).style.display="block"
					curtabref.className="current"
					this.last_accessed_tab=curtabref	},
				hideallsubs:function()
				{	for (var i=0; i<this.subvak.length; i++)
					document.getElementById(this.subvak[i]).style.display="none"	},
				init:function(menuId, selectedIndex)
				{	var tabItems=document.getElementById(menuId).getElementsByTagName("a")
					for (var i=0; i<tabItems.length; i++)
					{	if (tabItems[i].getAttribute("rel"))
						this.subvak[this.subvak.length]=tabItems[i].getAttribute("rel")
						if (i==selectedIndex)
						{	tabItems[i].className="current"
							this.revealsubmenu(tabItems[i])	}
						tabItems[i].onmouseover=function()
						{	menu_tabs.revealsubmenu(this)	}
					}
				}

			}