function initMap () {
	hideLayer ();
	hideImg();
}


function hideLayer () {
	var layer = document.getElementsByClassName ('mapLayer');
	var tablayer = $A(layer);
	tablayer.each ( function (el) {
		el.hide();
	});
	
	hideImg();
}


function hideImg () {
	var img = document.getElementsByClassName ('mapImg');
	var tabimg = $A(img);
	tabimg.each ( function (el) {
		el.className = 'mapImg mapImgHide'; 
	});
}


function showLayer (l) {
	hideLayer();
	$(l).show();
	
	showImg (l);
	
}


function showImg (l) {
	var limg = l + 'Img'
	$(limg).className = 'mapImg mapImgShow';
}