var chglang = function(){
	var lng = $("langswitch_sel").value;
	var loc = window.location.href;
	if(loc.match(/lang=([a-z]{2})/)){
		loc = loc.replace(/lang=[a-z]{2}/, "lang="+lng);
	} else {
		if(loc.match(/\?/)){
			loc += "&lang="+lng
		} else {
			loc += "?lang="+lng
		}
	}
	window.location.href = loc;
}
var open_helps = Array();
function showhelp(hellp){
	open_helps.each(function(it){$("help_"+it).hide();});
	open_helps = Array();
	$("help_"+hellp).show();
	open_helps.push(hellp);
}