isIE=document.all;
isNN=!document.all&&document.getElementById;
isN4=document.layers;

function ddInit(e){
  whichDog=isIE ? document.all.theLayer : document.getElementById("theLayer");  
  whichDog_=isIE ? document.all.theLayer_ : document.getElementById("theLayer_");  
}


function hideMe(){
  if (isIE||isNN) whichDog.style.visibility="hidden";
  else if (isN4) document.theLayer.visibility="hide";
}

function showMe(){
  if (isIE||isNN){
	   whichDog.style.visibility="visible";
  } else if (isN4){ 
	  document.theLayer.visibility="show";
  }
}


function ddInit_(e){
  whichDog_=isIE ? document.all.theLayer_ : document.getElementById("theLayer_");  
}

function hideMe_(){
  if (isIE||isNN) whichDog_.style.visibility="hidden";
  else if (isN4) document.theLayer_.visibility="hide";
}

function showMe_(){
  if (isIE||isNN){
	   whichDog_.style.visibility="visible";
  } else if (isN4){ 
	  document.theLayer_.visibility="show";
  }
}

document.onmousedown=ddInit;