function embassis(s) {
div='div'+s;
img_up='img_up'+s;
img_down='img_down'+s;

if (document.getElementById(div).style.display=="") {
document.getElementById(div).style.display="none";
document.getElementById(img_down).style.display="none";
document.getElementById(img_up).style.display="";
}
else{
document.getElementById(div).style.display="";
document.getElementById(img_up).style.display="none";
document.getElementById(img_down).style.display="";
}
}