function makeVisible(a0, a1, a2, a3, a4, a5, a6, a7, a8){

  for (i=0; i < arguments.length; i++){
    var myArg = arguments[i];
   
    if (myArg && myArg != ""){ 
	    document.getElementById(arguments[i]).style.visibility="visible";
      }
    }
}

function makeNotVisible(a0, a1, a2, a3, a4, a5, a6, a7, a8){

  for (i=0; i < arguments.length; i++){
    var myArg = arguments[i];
    if (myArg && myArg != ""){
	    document.getElementById(myArg).style.visibility="hidden";
      }
    }
}

var layerTT = null;
    function showMe(layer,state) { 
   if (state == "on" && layer){ 
     if (layerTT != null) layerTT.style.display='none';
     layer.style.display='block';
     layerTT = layer;
   }
   if (state == "off"){ 
     layerTT.style.display='none';
   }
 }