// toggle visibility of specific DOM objects
function togglePartTimeLayer(selection,layer) {
	
	var element = document.getElementById(layer);
	var visSetting;
	
	if(selection == "part") {
		visSetting = "inline";
		
	}	else if (selection == "full"){
		
		visSetting = "none";
	}
	
	element.style.display = visSetting;
}