<!--
var W3C = document.getElementById? true : false;
var NN4 = document.layers? true : false;
var IE4 = document.all? true : false;
var MOZ5 = ((navigator.userAgent.toLowerCase().indexOf("mozilla")==0) && (navigator.userAgent.toLowerCase().charAt(8) >= 5) && (navigator.userAgent.toLowerCase().indexOf("compatible")<0));
var OP = navigator.userAgent.toLowerCase().indexOf("opera")>=0;
var layer1 = 'loginBox';
var layer2 = 'defaultBox';
var layer3 = 'backToApp';

function display(layerName) {
	if (W3C) {
		document.getElementById(layerName).style.visibility = "visible";
	} if (IE4) {
		document.all(layerName).style.visibility = "visible";
	} else if(NN4) {
		document.layers[layerName].visibility = "show";
	}
}

function hide(layer) {
	if (W3C) {
		document.getElementById(layer).style.visibility = "hidden";
	} else if (IE4) {
		document.all(layer).style.visibility = "hidden";
	} else if(NN4) {
		document.layers[layer].visibility = "hide";
	}
}

function hideAll() {
        hide(layer1);
        hide(layer2);
        hide(layer3);
}
// -->