function $(i){return document.getElementById(i);}
function fiek(s){for(var i=18; i<=80; i++)document.write('<option'+(i==s?' selected':'')+' value="'+i+'">'+i+'</option>');}
function getRadioValue(ro)
{
  if(!ro) return "";
  var l = ro.length;
  if(l == undefined)
    if(ro.checked)
      return ro.value;
    else
      return "";
  for(var i = 0; i < l; i++)
    if(ro[i].checked) return ro[i].value;
  return "";
}
function win(url,title,w,h)
{
  var sw = screen.availWidth;
  var sh = screen.availHeight;
  var param="scrollbars,resizable,height="+h+",width="+w+",left="+(((sw-w)/2)-10)+",top="+(((sh-h)/2)-20);
  window.open(url, title, param);
}