var ActivDiv2 = false;
var ActivDiv = false;
var isNS = (navigator.appName == "Netscape");
	
var string1 = (isNS) ? "document." : "document.all.";
var string2 = (isNS) ? "" : ".style";


function ShowM(d_name){
var div=ActivDiv;
	if(ActivDiv) HideDiv(ActivDiv);
	if (div!=d_name){
	ShowDiv(d_name);
	ActivDiv=d_name; 
	} 
}

function HideM(d_name){
	HideDiv(d_name);
	ActivDiv=false;
}

function ShowDiv(d_id){
	if(eval(string1 + d_id)){
		eval(string1 + d_id + string2 + '.visibility = "visible";');
	};
}

function HideDiv(d_id){
	if(eval(string1 + d_id)){
		eval(string1 + d_id + string2 + '.visibility = "hidden";');
	};
	ActivDiv=false;
}

function HideAll(){
	if(ActivDiv) HideDiv(ActivDiv);
}

function hideother(d_id){
	if(ActivDiv){
	if(ActivDiv!=d_id) HideDiv(ActivDiv);
	}
}