/// Maak menu
function h(naam,def,img1,img2)
{
document.write("<a onclick=\"zap('"+naam+"', 0);return false;\" style=\"cursor: hand;\"><img src=\"images/knop_"+naam+".gif\" alt=\""+def+"\" border=\"0\" vspace=\"1\" onmouseover=\"imgswap(this, "+img1+");\"  onmouseout=\"imgswap(this, "+img2+");\"></a><BR>");
}




///Detect
var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;
if (checkIt('konqueror'))
{
	browser = "Konqueror";
	OS = "Linux";
}
else if (checkIt('omniweb')) browser = "OmniWeb"
else if (checkIt('opera')) browser = "Opera"
else if (checkIt('webtv')) browser = "WebTV";
else if (checkIt('icab')) browser = "iCab"
else if (checkIt('msie')) browser = "IE"
else if (!checkIt('compatible'))
{
	browser = "Netscape"
	version = detect.charAt(8);
}
else browser = "An unknown browser";

if (!version) version = detect.charAt(place + thestring.length);

if (!OS)
{
	if (checkIt('linux')) OS = "Linux";
	else if (checkIt('x11')) OS = "Unix";
	else if (checkIt('mac')) OS = "Mac"
	else if (checkIt('win')) OS = "Windows"
	else OS = "unknown OS";
}

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

// Check Plugins
var detectableWithVB = false;
var pluginFound = false;

function redirectCheck(pluginFound, redirectURL, redirectIfFound) {
    if( redirectURL && ((pluginFound && redirectIfFound) || 
	(!pluginFound && !redirectIfFound)) ) {
	goURL(redirectURL);
	return pluginFound;
    } else {
	return pluginFound;
    }	
}

function canDetectPlugins() {
    if( detectableWithVB || (navigator.plugins && navigator.plugins.length > 0) ) {
	return true;
    } else {
	return false;
    }
}

function detectReal(redirectURL, redirectIfFound) {
    pluginFound = detectPlugin('RealPlayer');
    if(!pluginFound && detectableWithVB) {
	pluginFound = (detectActiveXControl('rmocx.RealPlayer G2 Control') ||
		       detectActiveXControl('RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)') ||
		       detectActiveXControl('RealVideo.RealVideo(tm) ActiveX Control (32-bit)'));
    }	
    return redirectCheck(pluginFound, redirectURL, redirectIfFound);
}

function detectWindowsMedia(redirectURL, redirectIfFound) {
    pluginFound = detectPlugin('Windows Media Player');
    if(!pluginFound && detectableWithVB) {
	pluginFound = detectActiveXControl('MediaPlayer.MediaPlayer.1');
    }
    return redirectCheck(pluginFound, redirectURL, redirectIfFound);
}

function detectPlugin() {
    var daPlugins = detectPlugin.arguments;
    var pluginFound = false;
    if (navigator.plugins && navigator.plugins.length > 0) {
	var pluginsArrayLength = navigator.plugins.length;
	for (pluginsArrayCounter=0; pluginsArrayCounter < pluginsArrayLength; pluginsArrayCounter++ ) {
	    var numFound = 0;
	    for(namesCounter=0; namesCounter < daPlugins.length; namesCounter++) {
		if( (navigator.plugins[pluginsArrayCounter].name.indexOf(daPlugins[namesCounter]) >= 0) || 
		    (navigator.plugins[pluginsArrayCounter].description.indexOf(daPlugins[namesCounter]) >= 0) ) {
		    numFound++;
		}   
	    }
	    if(numFound == daPlugins.length) {
		pluginFound = true;
		break;
	    }
	}
    }
    return pluginFound;
} 


if ((navigator.userAgent.indexOf('MSIE') != -1) && (navigator.userAgent.indexOf('Win') != -1)) {
    document.writeln('<script language="VBscript">');
    document.writeln('detectableWithVB = False');
    document.writeln('If ScriptEngineMajorVersion >= 2 then');
    document.writeln('  detectableWithVB = True');
    document.writeln('End If');
    document.writeln('Function detectActiveXControl(activeXControlName)');
    document.writeln('  on error resume next');
    document.writeln('  detectActiveXControl = False');
    document.writeln('  If detectableWithVB Then');
    document.writeln('     detectActiveXControl = IsObject(CreateObject(activeXControlName))');
    document.writeln('  End If');
    document.writeln('End Function');
    document.writeln('Function detectQuickTimeActiveXControl()');
    document.writeln('  on error resume next');
    document.writeln('  detectQuickTimeActiveXControl = False');
    document.writeln('  If detectableWithVB Then');
    document.writeln('    detectQuickTimeActiveXControl = False');
    document.writeln('    hasQuickTimeChecker = false');
    document.writeln('    Set hasQuickTimeChecker = CreateObject("QuickTimeCheckObject.QuickTimeCheck.1")');
    document.writeln('    If IsObject(hasQuickTimeChecker) Then');
    document.writeln('      If hasQuickTimeChecker.IsQuickTimeAvailable(0) Then ');
    document.writeln('        detectQuickTimeActiveXControl = True');
    document.writeln('      End If');
    document.writeln('    End If');
    document.writeln('  End If');
    document.writeln('End Function');
    document.writeln('</scr' + 'ipt>');
}

function ShowDiv(aDiv) 
{ 
	var el; 

	if (document.layers) 
	{ 
		el =  document.layers['radio'].document.layers[aDiv]; 
		el.visibility = 'show'; 
	} 
	else if (document.all) 
	{ 
		el =  document.all[aDiv]; 
		el.style.visibility = 'visible'; 
	} 
	else if (document.getElementById)  
	{	 
 		el = document.getElementById(aDiv); 
		el.style.visibility  = 'visible'; 
	} 
} 

function HideDiv(aDiv) 
{ 
	var el;
 
	if (document.layers) 
	{ 
		el = document.layers['radio'].document.layers[aDiv]; 
		el.visibility ='hide'; 
	} 
	else if (document.all)  
	{ 
		el = document.all[aDiv]; 
		el.style.visibility = 'hidden'; 
	} 
	else if (document.getElementById) 
	{ 
		el = document.getElementById(aDiv); 
		el.style.visibility = 'hidden';
 	} 
}