function news() {

		window.open('news.php', target='content');
		
		obj1.style.display="none";
		obj2.style.display="none";
		obj3.style.display="none";
		obj4.style.display="none";
		obj5.style.display="none";
}	

function ueber_uns() {

		window.open('ueber_uns.html', target='content');
		
		obj1.style.display="none";
		obj2.style.display="none";
		obj3.style.display="none";
		obj4.style.display="none";
		obj5.style.display="none";
}	

function team() {

		window.open('team_01.html', target='content');

		obj1.style.display="none";
		obj2.style.display="none";
		obj3.style.display="none";
		obj4.style.display="none";
		obj5.style.display="none";
}	

function referenzen() {

	window.open('ref_2009.html', target='content');
   	
	obj1=document.getElementById('kontakt');
	obj2=document.getElementById('equipment');
	obj3=document.getElementById('dienstleistungen');
	obj4=document.getElementById('referenzen');
	obj5=document.getElementById('backstage');
	
	visible=(obj4.style.display!="none") 
	
   	if (visible) {
   
    } else {
		obj1.style.display="none";
		obj2.style.display="none";
		obj3.style.display="none";
		obj4.style.display="block";
		obj5.style.display="none";
	}	
}	

function backstage() {

   	window.open('backstage_07.html', target='content');
	
	obj1=document.getElementById('kontakt');
	obj2=document.getElementById('equipment');
	obj3=document.getElementById('dienstleistungen');
	obj4=document.getElementById('referenzen');
	obj5=document.getElementById('backstage');
	
	visible=(obj5.style.display!="none") 
	
   	if (visible) {
   
    } else {
		obj1.style.display="none";
		obj2.style.display="none";
		obj3.style.display="none";
		obj4.style.display="none";
		obj5.style.display="block";
	}	
}	

function kontakt() {

	window.open('kontakt.html', target='content');

   	obj1=document.getElementById('kontakt');
	obj2=document.getElementById('equipment');
	obj3=document.getElementById('dienstleistungen');
	obj4=document.getElementById('referenzen');
	obj5=document.getElementById('backstage');
	
	visible=(obj1.style.display!="none") 
	
   	if (visible) {
   
    } else {
		obj1.style.display="block";
		obj2.style.display="none";
		obj3.style.display="none";
		obj4.style.display="none";
		obj5.style.display="none";
	}
}	

function dienstleistungen() {

	window.open('dienstleistungen.html', target='content');

   	obj1=document.getElementById('kontakt');
	obj2=document.getElementById('dienstleistungen');
	obj3=document.getElementById('equipment');
	obj4=document.getElementById('referenzen');
	obj5=document.getElementById('backstage');
	
	visible=(obj2.style.display!="none") 
	
   	if (visible) {
   
    } else {
		obj1.style.display="none";
		obj2.style.display="block";
		obj3.style.display="none";
		obj4.style.display="none";
		obj5.style.display="none";
	}
}	

function equipment() {

	window.open('equipment.html', target='content');

   	obj1=document.getElementById('kontakt');
	obj2=document.getElementById('dienstleistungen');
	obj3=document.getElementById('equipment');
	obj4=document.getElementById('referenzen');
	obj5=document.getElementById('backstage');
	
	visible=(obj3.style.display!="none") 
	
   	if (visible) {
   
    } else {
		obj1.style.display="none";
		obj2.style.display="none";
		obj3.style.display="block";
		obj4.style.display="none";
		obj5.style.display="none";
	}
}	

function veranstaltungstechnik() {
		window.open('veranstaltungstechnik.html', target='content');
}

function tv_licht() {
		window.open('tv_licht.html', target='content');
}

function equipmentverleih() {
		window.open('equipmentverleih.html', target='content');
}

function lichter_buehne() {
		window.open('licht_buehnen_01.html', target='content');
}

function audio_beschallung() {
		window.open('audio_beschallung_01.html', target='content');
}
function video_multimedia() {
		window.open('video_multimedia_01.html', target='content');
}
function kataloganfrage() {
		window.open('kataloganfrage.html', target='content');
}
function kontaktformular() {
		window.open('kontaktformular.php', target='content');
}
function ref_2006() {
		window.open('ref_2006.html', target='content');
}
function ref_2007() {
		window.open('ref_2007.html', target='content');
}
function ref_2008() {
		window.open('ref_2008.html', target='content');
}
function ref_2009() {
		window.open('ref_2009.html', target='content');
}
function backstage_06() {
		window.open('backstage_06.html', target='content');
}
function backstage_07() {
		window.open('backstage_07.html', target='content');
}
function lageplan() {
		window.open('lageplan.html', target='content');
}
function agb() {
		window.open('agb.html', target='content');
}
function impressum() {
		window.open('impressum.html', target='content');
}