// Browser_check

	// hier beginnt der browsercheck
		var browser_ok = false;

	// plattform-check
		var browser_mac = (navigator.appVersion.indexOf("Mac")!=-1);

	// browser-check
		var browser_opera  = (navigator.userAgent.indexOf("Opera") !=-1)
		var browser_ns_4  = (navigator.userAgent.indexOf("Mozilla/4") !=-1);
		var browser_ns_404  = (navigator.userAgent.indexOf("Mozilla/4.04") !=-1);
		var browser_ie = false;
		var Moz = (navigator.userAgent.indexOf('Gecko') != -1); 



		if (navigator.userAgent.indexOf("MSIE") !=-1)
		{
			browser_ie = true;
			browser_ns_4 = false;
			browser_ns_404 = false;
		}
		
		var browser_ie5mac = false;
		if ((navigator.userAgent.indexOf('MSIE 5.') != -1) && (browser_mac))
		{
		   browser_ie = true;
		   browser_ie5mac = true;   
		};

		var browser_ie45mac = false;
		if ((navigator.userAgent.indexOf('MSIE 4.5') != -1) && (browser_mac))
		{
		   browser_ie = true;
		   browser_ie45mac = true;   
		};

		var browser_netscape6 = false;
 	    	var browser_netscape62 = false;

		if (navigator.userAgent.indexOf("Netscape6/6.2")!=-1)
		{
 	    		browser_netscape62 = true;
			browser_netscape6 = false;
		}

		else if (navigator.userAgent.indexOf("Netscape6")!=-1)
		{
 	    		browser_netscape62 = false;
			browser_netscape6 = true;
		}
		
		var browser_firefox = (navigator.userAgent.indexOf("Firefox")!=-1)
		var browser_mozilla172 = (navigator.userAgent.indexOf("Gecko/20040803")!=-1)
		var browser_netscape7 = (navigator.userAgent.indexOf("Gecko/20020823 Netscape/7.0")!=-1)
		var browser_version = parseInt(navigator.appVersion.substring(0,1));
		var browser_ok = (browser_version >= 4);

// ende browsercheck

// Seitenauswahl
  if (browser_ok)
  {
			if (browser_ie) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster.css'>");
			if (browser_ie45mac) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster.css'>");
			if (browser_ie5mac) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster.css'>");
			if (browser_ns_4) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster.css'>");
			if (browser_ns_404) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster.css'>");
			if (browser_netscape6) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster.css'>");
			if (browser_netscape62) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster.css'>");
			if (browser_netscape7) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster_mozilla.css'>");
			if (browser_mozilla172) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster_mozilla.css'>");
			if (browser_opera) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster_opera.css'>");
			if (browser_firefox) document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster_mozilla.css'>");
	}
   else
   {
   document.write("<LINK REL='stylesheet' MEDIA='all' TYPE='text/css' HREF='css/foerster.css'>");
   }