function showImg(imgName,imgSrc) {document.images[imgName].src = imgSrc;}
function sI(imgSrc) {document.images["imga"].src = "images/nav"+imgSrc+".jpg";}

function sh2(b,n,d){
for(i=1;i<=d;i++){
var bb=document.getElementById(b+i);bb.style.display=i==n?"block":"none";}
var cc=document.getElementById("nav0");cc.style.display="none";}
function shout2(b,d){
for(i=1;i<=d;i++){
var bb=document.getElementById(b+i);bb.style.display="none";}
var cc=document.getElementById("nav0");cc.style.display="block";}




function sha(b,n,d){for(i=1;i<=d;i++){var bb=document.getElementById(b+i);bb.style.display=i==n?"block":"none";}}
function shout3(b,d){for(i=1;i<=d;i++){var bb=document.getElementById(b+i);bb.style.display="none";}}




function sh(b,n,d){for(i=1;i<=d;i++){var bb=document.getElementById(b+i);bb.style.display=i==n?"block":"none";}}
function shout(b,d){for(i=1;i<=d;i++){var bb=document.getElementById(b+i);bb.style.display="none";}}

function sh3(a,b,n,d){for(i=1;i<=d;i++){
var aa=document.getElementById(a+i);aa.className=i==n?"dda":"";
var bb=document.getElementById(b+i);bb.style.display=i==n?"block":"none";}}