function leuchte(menuele)
{
	if (dummesDing) {
		document.getElementById("menu_" + menuele).style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltungIE/hauptbutton_an.png')";	
	} else if(!dummesDing) {
		document.getElementById("menu_" + menuele).style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltung/hauptbutton_an.png')";		
		document.getElementById("kugelbild").style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltung/" + menuele + ".png')";	
	}
}
function unterleuchte(menuid)
{
	if (dummesDing) {
		document.getElementById(menuid + "links").style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltungIE/untermenu_links.png')";
		document.getElementById(menuid + "mitte").style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltungIE/untermenu_mitte.png')";
		document.getElementById(menuid + "rechts").style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltungIE/untermenu_rechts.png')";	
	} else if(!dummesDing) {
		document.getElementById(menuid + "links").style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltung/untermenu_links.png')";
		document.getElementById(menuid + "mitte").style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltung/untermenu_mitte.png')";
		document.getElementById(menuid + "rechts").style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltung/untermenu_rechts.png')";			
	}
}
function unterentleuchte(menuid)
{
	document.getElementById(menuid + "links").style.backgroundImage = "none";
	document.getElementById(menuid + "mitte").style.backgroundImage = "none";
	document.getElementById(menuid + "rechts").style.backgroundImage = "none";	
}
function entleuchte(menuele)
{
	document.getElementById("menu_" + menuele).style.backgroundImage = "none";	
	document.getElementById("kugelbild").style.backgroundImage = "none";	
}
function druecke(menuele)
{
	if (dummesDing) {
		document.getElementById("menu_" + menuele).style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltungIE/hauptbutton_gedrueckt.png')";
	} else if(!dummesDing) {	
		document.getElementById("menu_" + menuele).style.backgroundImage = "url('http://www.schuelper.com/bilder/gestaltung/hauptbutton_gedrueckt.png')";
	}	

}

function email(feld, kennung, domain)
{
	feld.href = "mailto:" + kennung + "@" + domain;
}

function diashow()
{
	window.open("http://www.schuelper.com/bilder/dia/gelsenkirchen/Gelsenkirchen_1040.jpg","<titel>","fullscreen=yes")
}

function correctPNG() // correctly handle PNG transparency in Win IE 5.5 or higher.
   {
   for(var i=0; i<document.images.length; i++)
      {
	  var img = document.images[i]
	  var imgName = img.src.toUpperCase()
	  if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
	     {
		 var imgID = (img.id) ? "id='" + img.id + "' " : ""
		 var imgClass = (img.className) ? "class='" + img.className + "' " : ""
		 var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
		 var imgStyle = "display:inline-block;" + img.style.cssText 
		 if (img.align == "left") imgStyle = "float:left;" + imgStyle
		 if (img.align == "right") imgStyle = "float:right;" + imgStyle
		 if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle		
		 var strNewHTML = "<span " + imgID + imgClass + imgTitle
		 + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
	     + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
		 + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
		 img.outerHTML = strNewHTML
		 i = i-1
	     }
      }
   }
if(document.all) window.attachEvent("onload", correctPNG);