function toggleLayer(showHideLayer) {
	if (document.getElementById(showHideLayer).style.display == 'block') {
		document.getElementById(showHideLayer).style.display = 'none'; 
	} else {
		document.getElementById(showHideLayer).style.display = 'block'; 
	}
}





function toggleClassname(id, newClassName, defaultClassName) {
	if (document.getElementById(id).className == defaultClassName) {
		document.getElementById(id).className = newClassName; 
	} else {
		document.getElementById(id).className = defaultClassName; 
	}
}