isAOL=false;
isIE=false;
isNS=false;
isNS6=false;

if (is_aol) {
	isAOL = true;
	} else if (is_ie4up) isIE = true;

if (is_nav6up) {
	isNS6 = true;
	} else if (is_nav4up) isNS = true;

// test and alert for browser compatability
// if ((!(is_nav4up || is_ie4up || is_opera5up)) || is_aol) alert("Sorry, but this site only caters for:\u000D\u000D Internet Explorer 4,\u000D Netscape Navigator 4,\u000D Opera 5 (please alter your preferences to identify as Opera.)\u000D\u000Dor higher browser versions.\u000D\u000DPlease default to one of these browsers.");


<!--change this variable nM to the number of menus-->

var mN = 4

function showMenu(menu){
	if(isNS6) {
		for(i=1; i<=mN; i++) {
			valdivid='menuContent'+i
			if (menu != 'menuContent'+i){
				document.getElementById(''+valdivid+'').style.visibility="hidden"
			}else{
				document.getElementById(''+valdivid+'').style.visibility="visible"
				//eval('document.GetElementById(menuContent'+i+').style.visibility="visible"');
			}
		}
	}else if(isNS){	
		for(i=1; i<=mN; i++) {
			if (menu != 'menuContent'+i){
				eval('document.menuContent'+i+'.visibility="hidden"')
			}else{
				eval('document.menuContent'+i+'.visibility="visible"');
			}
		}
	}else {
		for(i=1; i<=mN; i++) {
			if (menu != 'menuContent'+i){
				eval('document.all.menuContent'+i+'.style.visibility="hidden"')
			}else{
				eval('document.all.'+menu+'.style.visibility="visible"')
			}
		}
	}
}

function hideMenu(menu){
	if(isNS6){
		document.getElementById(''+menu+'').style.visibility="hidden"
		}else if(isNS){
			eval('document.'+menu+'.visibility="hidden"')
		}else{
				eval('document.all.'+menu+'.style.visibility="hidden"')
		}
}

function hideAll(){
	for(i=1; i<=mN; i++){
	valdivid='menuContent'+i
	if(isNS6){
		document.getElementById(''+valdivid+'').style.visibility="hidden"
		//eval('document.GetElementById(menuContent'+i+').visibility="hidden"')
		}else if(isNS){
			eval('document.menuContent'+i+'.visibility="hidden"')
		}else{
			eval('document.all.menuContent'+i+'.style.visibility="hidden"')
		}
	}
}	
function hiLite(row) {
		if (row.className == 'out'){
			row.className = 'over'
		}else{
			row.className = 'out'
		}
}