function switch_lang(l) {

var current_page = location.pathname;
var lang = l;
	
if (current_page == "/") {
	current_page = "index_en.html";
} else if ((current_page.indexOf("_en.html") != -1) & (lang == "sw")) {
	 current_page = current_page.replace(/_en.html/, ".html");
} else if ((current_page.indexOf("_en.html") == -1) & (lang == "en")) {
	current_page = current_page.replace(/.html/, "_en.html");
} else if ((current_page.indexOf("_en.php") != -1) & (lang == "sw")) {
	 current_page = current_page.replace(/_en.php/, ".php");
} else if ((current_page.indexOf("_en.php") == -1) & (lang == "en")) {
	 current_page = current_page.replace(/.php/, "_en.php");
}

window.location.href = current_page;

}