var state = 'hidden';

function showhide(layer_ref) {

	if (state == 'visible') {
		state = 'hidden';
		varies = '0px';
	}
	else {
		state = 'visible';
		varies = 'auto';
	}
	if (document.all) {
		eval( "document.all." + layer_ref + ".style.visibility = state");
		eval( "document.all." + layer_ref + ".style.height = varies");
	}
	if (document.layers) {
		document.layers[layer_ref].visibility = state;
		document.layers[layer_ref].height = varies;
	}
	if (document.getElementById && !document.all) {
		maxwell_smart = document.getElementById(layer_ref);
		maxwell_smart.style.visibility = state;
		maxwell_smart.style.height = varies;
	}
}