var je_visi;
var je_hide;

function je_switch(lang) {
	
	if (lang=="j" || lang=="J") {
		je_visi="j";
		je_hide="e";
	} else {
		je_visi="e";
		je_hide="j";
	}
	
	for (var i=0; i < document.getElementsByTagName("span").length; i++) {
		var je_span = document.getElementsByTagName("span").item(i);
		 if (je_span.id == je_visi) {
		 	je_span.style.visibility = "visible";
		} else if (je_span.id == je_hide) {
			je_span.style.visibility = "hidden";
		}
	}
	
}