var browserName = navigator.appName;
var browserVersion = parseInt(navigator.appVersion);
var isIE = false;
var isNN = false;
var isDOM = false;
var isDomIE = false;
var isDomNN = false;
var layerok = false;

var isIE = browserName.indexOf("Microsoft Internet Explorer" )==-1?false:true;
var isNN = browserName.indexOf("Netscape")==-1?false:true;
var isOpera = browserName.indexOf("Opera")==-1?false:true;
var isDOM = document.getElementById?true:false;
var isDomNN = document.layers?true:false;
var isDomIE = document.all?true:false;

if ( isNN && browserVersion>=4 ) layerok=true;
if ( isIE && browserVersion>=4 ) layerok=true;
if ( isOpera && browserVersion>=5 ) layerok=true;

function doSubmit () {

	pushLayer("hideOnClick");
	showLayer("showOnClick");
}

function hideLayer(layerName) {
	if (isDOM)
		document.getElementById(layerName).style.visibility="hidden";
	else if (isDomIE)
		document.all[layerName].style.visibility="hidden";
	else if (isDomNN)
		document.layers[layerName].visibility="hidden";
}

function showLayer(layerName) {
	if (isDOM)
		document.getElementById(layerName).style.visibility="visible";
	else if (isDomIE)
		document.all[layerName].style.visibility="visible";
	else if (isDomNN)
		document.layers[layerName].visibility="visible";
}

function moveLayer(layerName,layerPosLeft,layerPosTop) {
    if (isDOM) {
        document.getElementById(layerName).style.left=layerPosLeft+"px";
		document.getElementById(layerName).style.top=layerPosTop+"px";
	} else if (isDomIE) {
		document.all[layerName].style.left=layerPosLeft+"px";
		document.all[layerName].style.top=layerPosTop+"px";
	} else if (isDomNN) {
		document.layers[layerName].left=layerPosLeft+"px";
		document.layers[layerName].top=layerPosTop+"px";
    }
}

function popLayer(layerName) {
	if (isDOM)
		document.getElementById(layerName).style.display="inline";
	else if (isDomIE)
		document.all[layerName].style.display="inline";
	else if (isDomNN)
		document.layers[layerName].display="inline";
}

function pushLayer(layerName) {
	if (isDOM)
		document.getElementById(layerName).style.display="none";
	else if (isDomIE)
		document.all[layerName].style.display="none";
	else if (isDomNN)
		document.layers[layerName].display="none";
}

function setyLayer(layerName, y) {
	if (isDOM)
		document.getElementById(layerName).style.top=y+"px";
	else if (isDomIE)
		document.all[layerName].style.top=y+"px";
	else if (isDomNN)
		document.layers[layerName].top=y+"px";
}