function popup(url,name,datavar) {
   url=url + '?'+ datavar;
   newwindow=window.open(url,'name','height=450,width=550');
   if (window.focus) {newwindow.focus()}
   return false;
}
function popup2(url,name,datavar) {
   url=url + '?'+ datavar;
   newwindow=window.open(url,'name','height=260,width=600');
   if (window.focus) {newwindow.focus()}
   return false;
}
function makevisible(cur,which){
   strength=(which==0)? 1 : 0.5
   if (cur.style.MozOpacity)
      cur.style.MozOpacity=strength
   else if (cur.filters)
      cur.filters.alpha.opacity=strength*100
}