function toggleLayer (whichLayer)
{
	if ( document.getElementById )
	{
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		style2.display = style2.display ? "" : "block";
	}
	else if ( document.all )
	{
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		style2.display = style2.display ? "" : "block";
	}
	else if ( document.layers )
	{
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		style2.display = style2.display? "" : "block";
	}
}

function setLayer (whichLayer, style)
{
	if ( document.getElementById )
	{
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		style2.display = style;
	}
	else if ( document.all )
	{
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		style2.display = style;
	}
	else if ( document.layers )
	{
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		style2.display = style;
	}
}

function warn (msg)
{
	alert(msg);
	return false;
}

function check ()
{
	form = document.dialog;
	
	if ( form.author.value == "" )
		return warn("Name fehlt!");
	
	if ( form.email.value == "" )
	{
		if ( (form.site.value == "") ||	(form.site.value == "http://") )
			return warn("Email oder URL fehlt!");
	}

	if ( form.text.value == "" )
		return warn("Text des Eintrags fehlt!");

	form.sid.value = "";
	
	return true;
}

function change (gallery, image) {
	document.getElementById('v' + gallery + 'i').src = '/images/loading.gif';
	toggleLayer('t' + gallery);
	document.getElementById('v' + gallery + 'i').src = image;
	toggleLayer('v' + gallery);
}

function playFlash () {
	toggleLayer('button');
	toggleLayer('movie');
	document.getElementById('freestyle').Play()
}