var language = "en";

function getCookie()
{
	if (document.cookie != "") {
		language = document.cookie.split("=")[1];
		language = language.split(";")[0];
	}
}

function setCookie()
{
	document.cookie = "yourLanguage=" + language + "; path=/";
}

function setLanguage()
{
	getCookie();
	document.getElementById(language).style.fontWeight = 'bold';

	var oDivs = document.getElementsByTagName("div");
	for(var i = 0; i < oDivs.length; i++)
      {
		if (oDivs[i].lang == language) {
			oDivs[i].style.visibility = 'visible';
			oDivs[i].style.display = 'block';
		} else if (oDivs[i].lang != '') {
			oDivs[i].style.visibility = 'hidden';
			oDivs[i].style.display = 'none';
		}
      } 
}

function switchLanguage(to)
{
	if (to != language) {
		document.getElementById(language).style.fontWeight = 'normal';
		document.getElementById(to).style.fontWeight = 'bold';

		var oDivs = document.getElementsByTagName("div");
		for(var i = 0; i < oDivs.length; i++)
	      {
			if (oDivs[i].lang == language) {
				oDivs[i].style.visibility = 'hidden';
				oDivs[i].style.display = 'none';
			} else if (oDivs[i].lang == to) {
				oDivs[i].style.visibility = 'visible';
				oDivs[i].style.display = 'block';
			}
	      } 
		language = to;
		setCookie();
	}
}