function setCookie(name, value, days, path, domain, secure) {
	if(days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));		
		var expires = date.toGMTString();
	}
	else {
		var expires = "";
	}

	document.cookie= name + "=" + escape(value) +
		((expires) ? "; expires=" + expires : "") +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		((secure) ? "; secure" : "");
}

function getCookie(name) {
	var dc = document.cookie;
	var prefix = name + "=";
	var begin = dc.indexOf("; " + prefix);
	if (begin == -1) {
		begin = dc.indexOf(prefix);
		if (begin != 0) return null;
	}
	else {
		begin += 2;
	}
	var end = document.cookie.indexOf(";", begin);
	if (end == -1) {
		end = dc.length;
	}
	return unescape(dc.substring(begin + prefix.length, end));
}

function deleteCookie(name, path, domain) {
	if (getCookie(name)) {
		document.cookie = name + "=" + 
			((path) ? "; path=" + path : "") +
			((domain) ? "; domain=" + domain : "") +
			"; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}

var previous_menu = "";
function switch_state(what) {
	if(document.getElementById(what).style.display == 'none') {
		setCookie("expand_menu_"+what,"true","365","/","geo.detego.no","");
		document.getElementById(what).style.display = "block";
	
		if(previous_menu != "" && previous_menu != what) {
			deleteCookie("expand_menu_"+previous_menu,"/","geo.detego.no");
			document.getElementById(previous_menu).style.display = "none";
		}
		previous_menu = what;
	}
	else {
		deleteCookie("expand_menu_"+what,"/","geo.detego.no");
		document.getElementById(what).style.display = "none";
	}
}