function GG_changeNav(handle) { // 1.0
	var rubrik_string, gg_string;
	var nav_performanceplastics;

	pfad = handle.split("../../../index-2.html");
	gg_string = pfad[2];
	rubrik_string = pfad[3];
//	alert ("handle=" + handle + "\r\nrubrik_string="+rubrik_string);
	if (parent.frames.length == 0){
//		alert("Seite wird umgeleitet in Frameset");
		
		top.location.href="/en/performanceplastics?content="+handle;
		return;
		}
	if (parent.frames[1].location.href.indexOf('navigation.html') != -1)
		frame_target = "parent";
	else frame_target = "top";

	nav_performanceplastics = new Array("generall/index.html","technicalxfolio/index.html","optoelectronics/index.html","rohacell/index.html","solimide/index.html","aircraft/index.html","engineeringplastics/index.html","inspec/index.html");
	flag=0;
	i=eval('for (i=0;i<'+frame_target+'.frames.length;i++){ if ('+frame_target+'.frames[i].name=="naviperformanceplastics") {flag=1;break;} }');
//	if (flag == 1) alert ('alles klar'); else alert ('falscher Bereich');
	if (flag == 0){
		eval(frame_target+'.location.href="/en/performanceplastics?content='+handle+'"');return;
	}

	gg_string = gg_string.replace(/\//,""); // Slash etfernen
// alert(rubrik_string);
	pfad2 = eval('nav_performanceplastics');
	// Primärnavigation highlighten:

	eval('if(' + frame_target + '.navi' + gg_string + ') ' + frame_target + '.navi' + gg_string + '.stay("img_' + rubrik_string + '");');
	// entsprechende Sekundärnavigation einblenden, alle anderen ausblenden:
	showDiv_string = frame_target + ".navi" + gg_string + ".MM_showHideLayers(";	for (k = 0; k < pfad2.length; k++) {
   var r_s = rubrik_string.replace(/_/,"x");
//   alert('rubrik_string='+r_s);
//   alert(k+"-"+pfad2[k]+"-"+r_s+"/")
		if (pfad2[k].toLowerCase() == r_s.toLowerCase()+'/')
     action_string = "show"
		else action_string = "hide";
		div = "substay"+pfad2[k];
		div = div.replace(/\//,"");
		showDiv_string += "'" + div + "','','" + action_string + "'";
		if ((k+1) < (pfad2.length)) showDiv_string += ",";
		}
	showDiv_string += ");";
// alert (showDiv_string);
	eval(showDiv_string);
	}