Netscape = navigator.appName.indexOf("Netscape")
versie4 = navigator.userAgent.indexOf("4.7")

// pageLayer: 0 = rootdir, 1 = subdir
function resolution(pageLayer) {
	if (versie4 != -1 && Netscape != -1) {
		if (pageLayer == 0) {
			document.write('<link rel="stylesheet" type="text/css" href="./styles/gvg_style.css"/>');
		}
		else {
			document.write('<link rel="stylesheet" type="text/css" href="../cssfiles/gvg_style.css"/>');	
		}
	}

	if (screen.width >= 800 && screen.width < 1024) {
		if (pageLayer == 0) {
			document.write('<link rel="stylesheet" type="text/css" href="./styles/gvg_style_800.css"/>');
		}
		else {
			document.write('<link rel="stylesheet" type="text/css" href="../cssfiles/gvg_style_800.css"/>');	
		}
	}

	if (screen.width >= 1024 && screen.width < 1152) {
		if (pageLayer == 0) {
			document.write('<link rel="stylesheet" type="text/css" href="./styles/gvg_style_1024.css"/>');
		}
		else {
			document.write('<link rel="stylesheet" type="text/css" href="../cssfiles/gvg_style_1024.css"/>');	
		}
	}

	if (screen.width >= 1152) {
		if (pageLayer == 0) {
			document.write('<link rel="stylesheet" type="text/css" href="./styles/gvg_style_1152.css"/>');
		}
		else {
			document.write('<link rel="stylesheet" type="text/css" href="../cssfiles/gvg_style_1152.css"/>');	
		}
	}
}

function checkBrowser() {

var name = navigator.appName;
var vers = navigator.appVersion;
var agent = navigator.userAgent.toLowerCase();
var browser = vers.charAt(22);
vers = vers.substring(0,1);

if (checkIt('opera', agent))
{
	document.location = 'gvg_error.htm';
	return;
}


if (name=="Microsoft Internet Explorer" && vers=="4" && browser >= 6)
{
	document.location = 'gvg_frames.htm';
}
else
{
	document.location = 'gvg_error.htm';
}

}


function getBrowserName() {
	if(checkIt('opera', navigator.userAgent.toLowerCase())) {
		document.write('Opera');
	}
	else
	{
		document.write(navigator.appName);
	}
}

function getBrowserVersion() {
	document.write(navigator.appVersion);
	document.write('</li><li>');
	document.write(navigator.userAgent);
}

function checkIt(string, detect)
{
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}