function showDiv(lay) {
	if ( lay != "none" ) {
		hideDiv();
		if (isDOMCompl) {
			document.getElementById(lay).style.visibility = "visible"
		} else {
			eval('document.' + coll + lay + styleObj+ '.visibility = "visible"')
		}
	}
}
                
function hideDiv() {
	if (isDOMCompl) {
		document.getElementById('drop001').style.visibility = "hidden"
	} else {
		eval('document.' + coll + 'drop001' + styleObj+ '.visibility = "hidden"')
	}
}