function HideAll(){
   LayerPlace.style.visibility = 'hidden';
   LayerArchitecture.style.visibility = 'hidden';
   LayerInfrastructure.style.visibility = 'hidden';
   LayerOch1.style.visibility = 'hidden';
   LayerOch2.style.visibility = 'hidden';
   LayerOch3.style.visibility = 'hidden';
   LayerTC.style.visibility = 'hidden';
}
function ViewLayer(Layer){
   HideAll();
   Layer.style.visibility = 'visible';
}