var origURL = String(this.location);
if (origURL.indexOf('?') != -1)
{
  contentURL = origURL.substring(origURL.indexOf('?')+1, origURL.length);
  document.write('<frameset cols="20%,80%"><frame src="Left.html" name="LEFT" MARGINWIDTH="20" MARGINHEIGHT="50" SCROLLING="YES"><frame src="' + contentURL   + '" name="MAIN" SCROLLING="YES"></frameset>');
}
else
{
  document.write('<frameset cols="20%,80%"><frame src="Left.html" name="LEFT" MARGINWIDTH="20" MARGINHEIGHT="50" SCROLLING="YES"><frame src= "Main.html" name="MAIN" SCROLLING="YES"></frameset>');
};