function newwindow(url)
{
  window.open(url,'','scrollbars=yes, location=no, status=no, width=630, height=500, resizable');
}


function newhint(url)
{
  window.open(url,'','scrollbars=yes, location=no, status=no, width=450, height=300, resizable,menubar=no');
}


function radios_enable(form, name, enable)
{
  radios=form.elements[name];
  if(radios)
    for(i=0; i<radios.length; i++)
    {
      radios[i].disabled = !enable;
      if(!enable)
        radios[i].checked = false;
    };
}

function radios_get_value(form, name)
{
  radios=form.elements[name];
  if(radios)
    for(i=0; i<radios.length; i++)
    {
      if(radios[i].checked)
        return radios[i].value;
    };
  return null;
}