// From http://www.quirksmode.org/js/cookies.html
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}



function setLocale(locale) {
	var arrayOfDivs = window.document.getElementsByTagName('div');
	var howMany = arrayOfDivs.length;
	// alert(arrayOfDivs.length + " divs");
	for (var i = 0; i < howMany; i++) {
		var thisDiv = arrayOfDivs[i];
		var styleClassName = thisDiv.className;
		// alert(styleClassName);
		if ((styleClassName == 'en') || (styleClassName == 'pt') || (styleClassName == 'de')) {
			var vis = (locale == styleClassName);
			// alert(styleClassName + " " + vis);
			thisDiv.style.display = vis ? "" : "none";
		}
	}

	// eraseCookie('paragliding_locale');
	createCookie( 'paragliding_locale', locale, 999 );
}

var is_setup = false;
function setup() {
	if (is_setup) return;
	is_setup = true;

	var e = document.createElement("DIV");
	e.innerHTML = "<div class=languagebar>"+
		
		"<div class='en'>English <a href='javascript:setLocale(\"de\");'>Deutsch</a> <a href='javascript:setLocale(\"pt\");'>Português</a></div>"+
		"<div class='de'><a href='javascript:setLocale(\"en\");'>English</a> Deutsch <a href='javascript:setLocale(\"pt\");'>Português</a></div>"+
		"<div class='pt'><a href='javascript:setLocale(\"en\");'>English</a> <a href='javascript:setLocale(\"de\");'>Deutsch</a> Português</div>"+
	       
		"</div> ";
	document.body.appendChild(e);

	// alert("Locale cookie is " + readCookie( 'paragliding_locale' ));
	setLocale(readCookie( 'paragliding_locale' ) || "en");

	// alert("done");
}

// element visibility set
function ev(element,vis) {
	element.style.display = vis ? "" : "none";
}

// switch visibility
function sw(va,vb) {
	var vis = document.getElementById(va).style.display != "none";
	ev(document.getElementById(va),!vis);
	ev(document.getElementById(vb),vis);
}