// показать/скрыть слой
function showLayer(id,state)
{
	d=document.getElementById(id);
	var vis="hidden";
	if (state)
	{
		vis="visible";
	}
	d.style.visibility=vis;
}
function showState(n)
{
	if (n==0)
	{
		showLayer("mainMapStep",0);
		showLayer("mainMapStepRounded",0);
		showLayer("mainMapRoadUnRounded",0);
		showLayer("mainMapStepNotRounded",1);
		showLayer("mainMapRoad",1);
		showLayer("mainMapRoadRounded",1);
	} else
	{
		showLayer("mainMapRoad",0);
		showLayer("mainMapRoadRounded",0);
		showLayer("mainMapStepNotRounded",0);
		showLayer("mainMapRoadUnRounded",1);
		showLayer("mainMapStep",1);
		showLayer("mainMapStepRounded",1);
		
	}
}