// ab hier werden die ganzen mouseoverbilder für die navigation vorgeladen
	var navq = new Image(); navq.src = "../img/navq.gif";
	var navq_a = new Image(); navq_a.src = "../img/navq_a.gif";
	var nav2q = new Image(); nav2q.src = "../img/nav2q.gif";
	var nav2q_a = new Image(); nav2q_a.src = "../img/nav2q_a.gif";
	var nav3q = new Image(); nav3q.src = "../img/nav3q.gif";
	var nav3q_a = new Image(); nav3q_a.src = "../img/nav3q_a.gif";


// stylesheet-weiche
	if (navigator.platform.substring(0,3).toLowerCase()=='mac')
	{
	   document.write("<link rel='stylesheet' href='../css/mac.css'>");
	}
	else if (navigator.platform.substring(0,5).toLowerCase()=='linux')
	{
	   document.write("<link rel='stylesheet' href='../css/linux.css'>");
	}
	else
	{
	   if (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1)>='4')
	   {
		  document.write("<link rel='stylesheet' href='../css/ns.css'>");
	   }
	   if (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1)=='5')
	   {
		  document.write("<link rel='stylesheet' href='../css/ie.css'>");
	   }
	   if (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.substring(0,1)>=4)
	   {
		  document.write("<link rel='stylesheet' href='../css/ie.css'>");
	   }
	   else
	   {
		  document.write("<link rel='stylesheet' href='../css/ns.css'>");
	   }
	}