function InFrame(){
  if(parent.FrameTest()){
    return 1;
  }else{
    return 0;
  }//endif
}
function FrameTest(){
  return 0;
}
function RestoreNav(){
  if(InFrame())parent.RestoreNav();
}
function ReplaceNav(newhtml){
  if(InFrame())parent.ReplaceNav(newhtml);
}
function subtitle(tit){
  if(InFrame())parent.subtitle(tit);
}

var showmeth;
showmeth=0;

function ShowOverlay(x,y){
  var ovly;
  ovly=document.getElementById(x);
  if(y){
    if(showmeth==1){
      ovly.style.visibility="inherit";
    }else if(showmeth==2){
      ReplaceNav(ovly.innerHTML);
    }
  }else{
    if(showmeth==1){
      ovly.style.visibility="hidden";
    }else if(showmeth==2){
      RestoreNav();
    }
  }
}

function TestOverlay(){
  document.getElementById("hoverinfo").style.visibility="inherit";
  if((document.getElementById("hoverinfo").innerHTML)&&InFrame()){
    showmeth=2;
  }else if(document.getElementById("hoverinfo").style){
    showmeth=1;
  }
}