// Vorladen der Buttons
		var img01out = new Image();
		img01out.src = 'gfx/btn-home-01.gif';
		var img02out = new Image();
		img02out.src = 'gfx/btn-leistungen-01.gif';
		var img03out = new Image();
		img03out.src = 'gfx/btn-praxis-01.gif';
		var img04out = new Image();
		img04out.src = 'gfx/btn-auszeichnungen-01.gif';
		var img05out = new Image();
		img05out.src = 'gfx/btn-mitgliedschaften-01.gif';
		var img06out = new Image();
		img06out.src = 'gfx/btn-kontakt-01.gif';
		var img07out = new Image();
		img07out.src = 'gfx/btn-impressum-01.gif';
		var img08out = new Image();
		img08out.src = 'gfx/btn-zahnmedizin-01.gif';
		var img09out = new Image();
		img09out.src = 'gfx/btn-keramik-01.gif';
		var img10out = new Image();
		img10out.src = 'gfx/btn-implantologie-01.gif';
		var img11out = new Image();
		img11out.src = 'gfx/btn-zahnchirurgie-01.gif';
		var img12out = new Image();
		img12out.src = 'gfx/btn-vollnarkose-01.gif';
		var img13out = new Image();
		img13out.src = 'gfx/btn-dentallabor-01.gif';
		var img14out = new Image();
		img14out.src = 'gfx/btn-lasertherapie-01.gif';
		var img15out = new Image();
		img15out.src = 'gfx/btn-angst-01.gif';
		var img20out = new Image();
		img20out.src = 'navi/zahnmedizin-01.gif';
		var img21out = new Image();
		img21out.src = 'navi/keramik-01.gif';
		var img22out = new Image();
		img22out.src = 'navi/implantologie-01.gif';
		var img23out = new Image();
		img23out.src = 'navi/zahnchirurgie-01.gif';
		var img24out = new Image();
		img24out.src = 'navi/laseranwendungen-01.gif';
		var img25out = new Image();
		img25out.src = 'navi/paradontologie-01.gif';
		var img26out = new Image();
		img26out.src = 'navi/kopfundgesicht-01.gif';
		var img27out = new Image();
		img27out.src = 'navi/kiefergelenk-01.gif';
		var img28out = new Image();
		img28out.src = 'navi/kinder-01.gif';
		var img29out = new Image();
		img29out.src = 'navi/prophylaxe-01.gif';
		var img30out = new Image();
		img30out.src = 'navi/kieferorthopaedie-01.gif';
		var img31out = new Image();
		img31out.src = 'navi/angst-01.gif';
		var img32out = new Image();
		img32out.src = 'navi/vollnarkose-01.gif';
		var img33out = new Image();
		img33out.src = 'navi/computer-01.gif';
		var img34out = new Image();
		img34out.src = 'navi/dentallabor-01.gif';
		var img35out = new Image();
		img35out.src = 'navi/zahnkosmetik-01.gif';
		var img36out = new Image();
		img36out.src = 'navi/zeit-01.gif';
		var img37out = new Image();
		img37out.src = 'navi/zahnmedizin-03.gif';
		var img38out = new Image();
		img38out.src = 'navi/umwelt-zm-01.gif';
			
				

		// Vorladen der 'Hover'-buttons
		var img01over = new Image();
		img01over.src = 'gfx/btn-home-02.gif';
		var img02over = new Image();
		img02over.src = 'gfx/btn-leistungen-02.gif';
		var img03over = new Image();
		img03over.src = 'gfx/btn-praxis-02.gif';
		var img04over = new Image();
		img04over.src = 'gfx/btn-auszeichnungen-02.gif';
		var img05over = new Image();
		img05over.src = 'gfx/btn-mitgliedschaften-02.gif';
		var img06over = new Image();
		img06over.src = 'gfx/btn-kontakt-02.gif';
		var img07over = new Image();
		img07over.src = 'gfx/btn-impressum-02.gif';
		var img08over = new Image();
		img08over.src = 'gfx/btn-zahnmedizin-02.gif';
		var img09over = new Image();
		img09over.src = 'gfx/btn-keramik-02.gif';
		var img10over = new Image();
		img10over.src = 'gfx/btn-implantologie-02.gif';
		var img11over = new Image();
		img11over.src = 'gfx/btn-zahnchirurgie-02.gif';
		var img12over = new Image();
		img12over.src = 'gfx/btn-vollnarkose-02.gif';
		var img13over = new Image();
		img13over.src = 'gfx/btn-dentallabor-02.gif';
		var img14over = new Image();
		img14over.src = 'gfx/btn-lasertherapie-02.gif';
		var img15over = new Image();
		img15over.src = 'gfx/btn-angst-02.gif';
		var img20over = new Image();
		img20over.src = 'navi/zahnmedizin-02.gif';
		var img21over = new Image();
		img21over.src = 'navi/keramik-02.gif';
		var img22over = new Image();
		img22over.src = 'navi/implantologie-02.gif';
		var img23over = new Image();
		img23over.src = 'navi/zahnchirurgie-02.gif';
		var img24over = new Image();
		img24over.src = 'navi/laseranwendungen-02.gif';
		var img25over = new Image();
		img25over.src = 'navi/paradontologie-02.gif';
		var img26over = new Image();
		img26over.src = 'navi/kopfundgesicht-02.gif';
		var img27over = new Image();
		img27over.src = 'navi/kiefergelenk-02.gif';
		var img28over = new Image();
		img28over.src = 'navi/kinder-02.gif';
		var img29over = new Image();
		img29over.src = 'navi/prophylaxe-02.gif';
		var img30over = new Image();
		img30over.src = 'navi/kieferorthopaedie-02.gif';
		var img31over = new Image();
		img31over.src = 'navi/angst-02.gif';
		var img32over = new Image();
		img32over.src = 'navi/vollnarkose-02.gif';
		var img33over = new Image();
		img33over.src = 'navi/computer-02.gif';
		var img34over = new Image();
		img34over.src = 'navi/dentallabor-02.gif';
		var img35over = new Image();
		img35over.src = 'navi/zahnkosmetik-02.gif';
		var img36over = new Image();
		img36over.src = 'navi/zeit-02.gif';
		var img37over = new Image();
		img37over.src = 'navi/zahnmedizin-04.gif';
		var img38over = new Image();
		img38over.src = 'navi/umwelt-zm-02.gif';
			
		
		
function imgOut(imgName){
		  document.images[imgName].src = eval(imgName + "out.src");
		}
		function imgOver(imgName){
		  document.images[imgName].src = eval(imgName + "over.src");
		}