function updateMap()
{
	document.updateMapForm.submit();
}


function showmap(id)
{
	if (id == 0)
	{
		document.getElementById('citymap').src = 'images/karte_all.gif';
	}
	else
	{
		document.getElementById('citymap').src = 'images/karte_all_trans' + id + '.gif';
	}
}


function showanfahrt(id)
{
	if (id == 1)
	{
		document.getElementById('citymap').src = 'images/anfahrt_grob_trans.gif';
	}
	else
	{
		document.getElementById('citymap').src = 'images/anfahrt_grob.gif';
	}
}


function preloadImages()
{
	var imgArray = new Array();

	imgArray[0]  = "images/karte_all_trans1.gif";
	imgArray[1]  = "images/karte_all_trans2.gif";
	imgArray[2]  = "images/karte_all_trans3.gif";
	imgArray[3]  = "images/karte_all_trans4.gif";
	imgArray[4]  = "images/karte_all_trans5.gif";
	imgArray[5]  = "images/karte_all_trans6.gif";
	imgArray[6]  = "images/karte_all_trans7.gif";
	imgArray[7]  = "images/karte_all_trans8.gif";

	for (i = 0; i < imgArray.length; i++)
	{
		var img = new Image();
		img.src = imgArray[i];
	}
}


function showInfoLabel(x, y, str)
{
	document.getElementById('infoLabel').style.left = x + 'px';
	document.getElementById('infoLabel').style.top = y + 'px';
	
	/* Top: invisible (IE-hack) */
	document.getElementById('infoLabelTop').innerHTML = "<span style='visibility:hidden;'>" + str + "</span>";
	
	/* Bottom: visible */
	document.getElementById('infoLabelBottom').innerHTML = str;
	
	document.getElementById('infoLabel').style.visibility = 'visible';
}

function hideInfoLabel()
{
	document.getElementById('infoLabel').style.visibility = 'hidden';
}