var b;

function checkBr() {
	var brname=navigator.appName;
	var brversion=BrVers = navigator.appVersion;

	if ( brname=="Microsoft Internet Explorer") {
		b=1;
	} else if ( brname=="Netscape" ) {
		brnummer=navigator.appVersion;
		brnummer=brnummer.substring(0,3);
		if (brnummer < 5) {
			b=2;
		} else {
			b=3;
		}
	} else {
		alert("Diese Seite wurde optimiert für IE ab V4.0 und NS ab V4.7!");
	}
}

function s(nr) {
	checkBr();
	
	var headframe = (top.frameset) ? "top.frameset.head" : "top.head";
	
	if (nr==0) {
		if (b==1) {
		eval(headframe+".document.all.bg0.style.visibility ='visible';");
		eval(headframe+".document.all.bg1.style.visibility ='hidden';");
		eval(headframe+".document.all.bg2.style.visibility ='hidden';");
		eval(headframe+".document.all.bg3.style.visibility ='hidden';");
		eval(headframe+".document.all.bg4.style.visibility ='hidden';");
		eval(headframe+".document.all.bg5.style.visibility ='hidden';");
		}
		if (b==2) {
		eval(headframe+".document.bg0.visibility = 'visible';");
		eval(headframe+".document.bg1.visibility = 'hidden';");
		eval(headframe+".document.bg2.visibility = 'hidden';");
		eval(headframe+".document.bg3.visibility = 'hidden';");
		eval(headframe+".document.bg4.visibility = 'hidden';");
		eval(headframe+".document.bg5.visibility = 'hidden';");
		}
		if (b==3) {
		eval(headframe+".document.getElementById('bg0').style.visibility = 'visible';");
		eval(headframe+".document.getElementById('bg1').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg2').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg3').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg4').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg5').style.visibility = 'hidden';");
		}
	}

	if (nr==1) {
		if (b==1) {
		eval(headframe+".document.all.bg0.style.visibility ='hidden';");
		eval(headframe+".document.all.bg1.style.visibility ='visible';");
		eval(headframe+".document.all.bg2.style.visibility ='hidden';");
		eval(headframe+".document.all.bg3.style.visibility ='hidden';");
		eval(headframe+".document.all.bg4.style.visibility ='hidden';");
		eval(headframe+".document.all.bg5.style.visibility ='hidden';");
		}
		if (b==2) {
		eval(headframe+".document.bg0.visibility = 'hidden';");
		eval(headframe+".document.bg1.visibility = 'visible';");
		eval(headframe+".document.bg2.visibility = 'hidden';");
		eval(headframe+".document.bg3.visibility = 'hidden';");
		eval(headframe+".document.bg4.visibility = 'hidden';");
		eval(headframe+".document.bg5.visibility = 'hidden';");
		}
		if (b==3) {
		eval(headframe+".document.getElementById('bg0').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg1').style.visibility = 'visible';");
		eval(headframe+".document.getElementById('bg2').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg3').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg4').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg5').style.visibility = 'hidden';");
		}
	}



	if (nr==2) {
		if (b==1) {
		eval(headframe+".document.all.bg0.style.visibility ='hidden';");
		eval(headframe+".document.all.bg1.style.visibility ='hidden';");
		eval(headframe+".document.all.bg2.style.visibility ='visible';");
		eval(headframe+".document.all.bg3.style.visibility ='hidden';");
		eval(headframe+".document.all.bg4.style.visibility ='hidden';");
		eval(headframe+".document.all.bg5.style.visibility ='hidden';");        
		}
		if (b==2) {
		eval(headframe+".document.bg0.visibility = 'hidden';");
		eval(headframe+".document.bg1.visibility = 'hidden';");
		eval(headframe+".document.bg2.visibility = 'visible';");
		eval(headframe+".document.bg3.visibility = 'hidden';");
		eval(headframe+".document.bg4.visibility = 'hidden';");
		eval(headframe+".document.bg5.visibility = 'hidden';");
		}
		if (b==3) {
		eval(headframe+".document.getElementById('bg0').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg1').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg2').style.visibility = 'visible';");
		eval(headframe+".document.getElementById('bg3').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg4').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg5').style.visibility = 'hidden';");
		}
	}


	if (nr==3) {
		if (b==1) {
		eval(headframe+".document.all.bg0.style.visibility ='hidden';");
		eval(headframe+".document.all.bg1.style.visibility ='hidden';");
		eval(headframe+".document.all.bg2.style.visibility ='hidden';");
		eval(headframe+".document.all.bg3.style.visibility ='visible';");
		eval(headframe+".document.all.bg4.style.visibility ='hidden';");
		eval(headframe+".document.all.bg5.style.visibility ='hidden';");
		}
		if (b==2) {
		eval(headframe+".document.bg0.visibility = 'hidden';");
		eval(headframe+".document.bg1.visibility = 'hidden';");
		eval(headframe+".document.bg2.visibility = 'hidden';");
		eval(headframe+".document.bg3.visibility = 'visible';");
		eval(headframe+".document.bg4.visibility = 'hidden';");
		eval(headframe+".document.bg5.visibility = 'hidden';");
		}
		if (b==3) {
		eval(headframe+".document.getElementById('bg0').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg1').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg2').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg3').style.visibility = 'visible';");
		eval(headframe+".document.getElementById('bg4').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg5').style.visibility = 'hidden';");
		}
	}



	if (nr==4) {
		if (b==1) {
		eval(headframe+".document.all.bg0.style.visibility ='hidden';");
		eval(headframe+".document.all.bg1.style.visibility ='hidden';");
		eval(headframe+".document.all.bg2.style.visibility ='hidden';");
		eval(headframe+".document.all.bg3.style.visibility ='hidden';");
		eval(headframe+".document.all.bg4.style.visibility ='visible';");
		eval(headframe+".document.all.bg5.style.visibility ='hidden';");        
		}
		if (b==2) {
		eval(headframe+".document.bg0.visibility = 'hidden';");
		eval(headframe+".document.bg1.visibility = 'hidden';");
		eval(headframe+".document.bg2.visibility = 'hidden';");
		eval(headframe+".document.bg3.visibility = 'hidden';");
		eval(headframe+".document.bg4.visibility = 'visible';");
		eval(headframe+".document.bg5.visibility = 'hidden';");
		}
		if (b==3) {
		eval(headframe+".document.getElementById('bg0').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg1').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg2').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg3').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg4').style.visibility = 'visible';");
		eval(headframe+".document.getElementById('bg5').style.visibility = 'hidden';");
		}
	}


	if (nr==5) {
		if (b==1) {
		eval(headframe+".document.all.bg0.style.visibility ='hidden';");
		eval(headframe+".document.all.bg1.style.visibility ='hidden';");
		eval(headframe+".document.all.bg2.style.visibility ='hidden';");
		eval(headframe+".document.all.bg3.style.visibility ='hidden';");
		eval(headframe+".document.all.bg4.style.visibility ='hidden';");
		eval(headframe+".document.all.bg5.style.visibility ='visible';");        
		}
		if (b==2) {
		eval(headframe+".document.bg0.visibility = 'hidden';");
		eval(headframe+".document.bg1.visibility = 'hidden';");
		eval(headframe+".document.bg2.visibility = 'hidden';");
		eval(headframe+".document.bg3.visibility = 'hidden';");
		eval(headframe+".document.bg4.visibility = 'hidden';");
		eval(headframe+".document.bg5.visibility = 'visible';");
		}
		if (b==3) {
		eval(headframe+".document.getElementById('bg0').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg1').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg2').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg3').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg4').style.visibility = 'hidden';");
		eval(headframe+".document.getElementById('bg5').style.visibility = 'visible';");
		}
	}

}