var NoOfTactics
NoOfTactics = 7

function selectTactic(n){

	
	//close all except n
	for(var i=1;i<=NoOfTactics;i++){
		if(n!=i){
			el = getElement("tactic" + i + "Content")
			setDisplay(el,'none')
		}
	}

	el = getElement("tactic" + n + "Content")
	switchDisplay(el)
	
}

function selectNavBox(label){
	el = getElement(label + "Content")
	switchDisplay(el)
}

var NoOfNavigation
NoOfNavigation = 10

function selectNavigation(label){
	//close all except label
	for(var i=1;i<=NoOfNavigation;i++){
		if(label!="nav"+i){
			el = getElement("nav" + i + "Content")
			setDisplay(el,'none')
		}
	}

	el = getElement(label + "Content")
	switchDisplay(el)
}

function switchDisplay(el){
	if(el!=null){
		if(el.style.display=="none" || el.style.display==""){
			el.style.display='inline'
		} else {
			el.style.display='none'
		}
	}
}
function setDisplay(el,value){
	if(el!=null){
		el.style.display=value
	}
}

function getElement(id){
	if(document.all){
		el = document.all(id)
	} else if(document.getElementById){
		el = document.getElementById(id)
	} else {
		el = null
	}
	return el
}