function hover(imgname,imgsrc){
	                document[imgname].src=imgsrc;
	            }
				
				function sitemap_ein(id) {
				document.getElementById(id).style.display = "block";
				}
				function sitemap_aus(id) {
				document.getElementById(id).style.display = "none";
				}

				function fenster(){
					fenster1=open("main_content/service/01.html","wk","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=400,height=275,left=100,top=100");
					fenster2=open("main_content/service/02.html","wk","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=400,height=275,left=100,top=100");
					fenster3=open("main_content/service/03.html","wk","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=400,height=275,left=100,top=100");
					fenster4=open("main_content/service/04.html","wk","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=400,height=275,left=100,top=100");
					fenster5=open("main_content/service/05.html","wk","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=400,height=275,left=100,top=100");
				}
				
				function FensterOeffnen(URL, Name, Breite, Hoehe){
					var Fensteroptionen = "toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,top=0px,left=0px";
					OffenesFenster = window.open(URL, 'Name', Fensteroptionen + ',width=' + Breite + ',height=' + Hoehe);
				}
				function FensterSchliessen(){
					OffenesFenster.close();
				}
				function mehr(id) {
				document.getElementById(id).style.display = "block";
				}
				function weniger(id) {
				document.getElementById(id).style.display = "none";
				}