function setNav(inc){
	if ((inc == 'konzept') || (inc == 'visionen') || (inc == 'jobs') || (inc == 'kontakt') || (inc == 'anfahrt')) {clikker('SN1','SN2','SN3');}
	if ((inc == 'kuehlwasser') || (inc == 'kesselwasser') || (inc == 'abwasser') || (inc == 'prozessadditive') || (inc == 'metallerzeugung') || (inc == 'kokereien') || (inc == 'bergbau') || (inc == 'staubbekaempfung') || (inc == 'turbinenreinigung') || (inc == 'emulsionsspaltung')) {clikker('SN2','SN1','SN3');}
	if ((inc == 'messtechnik') || (inc == 'gasturbinenreinigung')) {clikker('SN3','SN1','SN2');}

	if ((inc == 'kuehlwasser') || (inc == 'korrosionsinhibitoren') || (inc == 'haertestabilisatoren') || (inc == 'biozide') || (inc == 'dispergatoren')) {clikker('SN2','SN1','SN3');clikker('SSN21');}
	if ((inc == 'kesselwasser') || (inc == 'kesselhaertestabilisatoren') || (inc == 'sauerstoffbindemittel') || (inc == 'dampfkonditionierungsmittel')) {clikker('SN2','SN1','SN3');clikker('SSN22');}
	if ((inc == 'abwasser') || inc == 'flockungsmittel') {clikker('SN2','SN1','SN3');clikker('SSN23');}
	if ((inc == 'prozessadditive') || (inc == 'prozesskonditionierungsmittel') || (inc == 'antischaummittel') || (inc == 'reiniger') || (inc == 'verbrennungsadditive')) {clikker('SN2','SN1','SN3');clikker('SSN24');}
	if ((inc == 'staubbekaempfung') || (inc == 'geruchsbekaempfung')) {clikker('SN2','SN1','SN3');clikker('SSN25');}
	if ((inc == 'turbinenreinigung') || (inc == 'gasturbinenreiniger')) {clikker('SN2','SN1','SN3');clikker('SSN26');}
	if (inc == 'messtechnik2') {clikker('SN3','SN1','SN2');}
}


function clikker(a,b,c) {
/*	if (document.getElementById(a).style.display =='') {
		document.getElementById(a).style.display = 'none';
	
	else {*/
 		document.getElementById(a).style.display='';
		if (document.getElementById(b)) {document.getElementById(b).style.display = 'none';}
		if (document.getElementById(c)) {document.getElementById(c).style.display = 'none';}
//	}
}