<!--
isGoodBrowser = (navigator.appName == "Netscape" && parseInt(navigator.appVersion) >= 3) || ((navigator.appName.indexOf("Explorer") > -1) && parseInt(navigator.appVersion) >= 4);
if (isGoodBrowser) {
button0=new Image();
button1=new Image();
button2=new Image();
button3=new Image();
button4=new Image();
button5=new Image();
button6=new Image();
button7=new Image();
button8=new Image();
button9=new Image();
button10=new Image();
button11=new Image();

button0.src="n4-1.gif";
button1.src="n4.gif";
button2.src="n3-1.gif";
button3.src="n3.gif";
button4.src="n2-1.gif";
button5.src="n2.gif";
button6.src="n6-1.gif";
button7.src="n6.gif";
button8.src="n7-1.gif";
button9.src="n7.gif";
button10.src="n5-1.gif";
button11.src="n5.gif";

function switchImg(num) { 
if (num=="0") {document.a.src=button0.src;}
if (num=="1") {document.a.src=button1.src;}
if (num=="2") {document.b.src=button2.src;}
if (num=="3") {document.b.src=button3.src;}
if (num=="4") {document.c.src=button4.src;}
if (num=="5") {document.c.src=button5.src;}
if (num=="6") {document.d.src=button6.src;}
if (num=="7") {document.d.src=button7.src;}
if (num=="8") {document.e.src=button8.src;}
if (num=="9") {document.e.src=button9.src;}
if (num=="10") {document.f.src=button10.src;}
if (num=="11") {document.f.src=button11.src;}
 }
 }
//-->