var supStart=true;
var sup_nn;
var sup_tt;

sup_nn=1;
setTimeout('supchange_img()',50000);
function supresetPlay(){
supStart=true;
var e = document.getElementById("top_slider");
var a = e.getElementsByTagName("img");
for(i=0;i<a.length;j++){
 if(a[j].src == bPlay.src) a[j].src = bPause.src;
}
}
function suppre_img(){
supresetPlay();
sup_nn--;
if(sup_nn < 1) sup_nn=4;
supsetFocus(sup_nn);
}
function supnext_img(){
supresetPlay();
sup_nn++;
if(sup_nn > 4) sup_nn=1;
supsetFocus(sup_nn);
}
function supchange_img()
{
if(supStart){
 sup_nn++;
 if(sup_nn>4) sup_nn=1;
 supsetFocus(sup_nn);
 }else{
 sup_tt=setTimeout('supchange_img()',100);
 }
}
function supsetFocus(j)
{
 if(sup_tt) clearTimeout(sup_tt);
 sup_nn = j;
 selectLayersup(j);
 sup_tt=setTimeout('supchange_img()',50000);
}
function selectLayersup(j)
{
 switch(j)
 {
 case 1:
document.getElementById("support_s1").style.display="block";
document.getElementById("support_s2").style.display="none";
 break;
case 2:
document.getElementById("support_s1").style.display="none";
document.getElementById("support_s2").style.display="block";
 break;
 }
}