function calcWidth() {

  ie = (document.scripts) ? 1 : 0;
  ns = (document.layers) ? 1 : 0;
  var sw = 0;
   
  if (ie) { sw = document.body.clientWidth - 227; }
   
  else {
   
  if (window.document.body.clientHeight < 
window.document.body.scrollHeight)   {
  // sw = window.innerWidth - 246;
  }
  else {sw = window.innerWidth - 236}
  }

  return sw + "px";

  }