function showRefToggle() {
	if (document.createTextNode) {
		// Uses DOM calls to avoid document.write + XHTML issues

                refHideText = "Einzelnachweise verstecken";
                refShowText = "Einzelnachweise anzeigen";

        var a;
        var bodyContent = document.getElementById('bodyContent');
        if (bodyContent != null) {
         var olarray = bodyContent.getElementsByTagName("ol");
         if (olarray != null && olarray.length > 0) {
                 a = olarray.length - 1;
                 var olnode = olarray;
                 if (olnode.className == "references")  {
                    olnode.id = "referencelist";
                 }
         }
        }

        var linkHolder = document.getElementById('referencelist');

		if (!linkHolder)
			return;

		var outerSpan = document.createElement('div');                
		outerSpan.className = 'reftoggle';
		var toggleLink = document.createElement('a');
		toggleLink.id = 'reftogglelink';
		toggleLink.className = 'internal';
		toggleLink.href = 'javascript:toggleRef()';
		toggleLink.appendChild(document.createTextNode(refHideText));

		var linkHolder2 = document.getElementById('contentSub'); // the first link is right behind the   //redirect
                if (linkHolder2) {
                   var outerSpan2 = outerSpan.cloneNode(true);
                   var toggleLink2 = toggleLink.cloneNode(true);
                   toggleLink2.id = 'reftogglelink2';
                   outerSpan2.id = 'reftogglespanhead';
		   outerSpan2.appendChild(document.createTextNode('['));
		   outerSpan2.appendChild(toggleLink2);
		   outerSpan2.appendChild(document.createTextNode(']'));
                   linkHolder2.parentNode.insertBefore(outerSpan2, linkHolder2.nextSibling);
                   linkHolder2.parentNode.insertBefore(document.createTextNode(' '),linkHolder2.nextSibling);
                   linkHolder2.style.marginBottom = '1px';
                }

                outerSpan.id = 'reftogglespandown';

		outerSpan.appendChild(document.createTextNode('['));
		outerSpan.appendChild(toggleLink);
		outerSpan.appendChild(document.createTextNode(']'));

                linkHolder.parentNode.insertBefore(outerSpan, linkHolder);
                linkHolder.parentNode.insertBefore(document.createTextNode(' '), linkHolder);

		var cookiePos = document.cookie.indexOf("hideref=");
		if (cookiePos > -1 && document.cookie.charAt(cookiePos + 8) == 1)
			toggleRef();
	}
}

function toggleRef() {
        var switched = 2;
	var refarr = document.getElementsByTagName('sup');

        for (var cou = 0; cou < refarr.length; cou++) {
          if (refarr.className == "reference") {
            if (refarr.style.display == "none") {
                refarr.style.display = 'inline';
                switched = 0;
            } else {
                refarr.style.display = 'none';
                switched = 1;
            }
          }
        }

        switch (switched) {
	   case 0: // references are shown
            var olref = document.getElementById('referencelist');
            if (olref) { olref.style.display = 'block'; }
            changeText(document.getElementById('reftogglelink2'), refHideText);
            changeText(document.getElementById('reftogglelink'), refHideText);
	    document.cookie = "hideref=0";
            break;
	   case 1: // references are not shown
            var olref = document.getElementById('referencelist');
            if (olref) { olref.style.display = 'none'; }
            changeText(document.getElementById('reftogglelink2'), refShowText);
            changeText(document.getElementById('reftogglelink'), refShowText);
	    document.cookie = "hideref=1";
            break;
        }
}

$(showRefToggle);