document.domain='519.com';

function $No(element) {
  if (typeof element == 'string')
    element = document.getElementById(element);
  return element;
}

var currTId = null;
var currDId = null;

function mouseOver2(obj,tag0,tag1,id){

    if(RTId!=null){
        if($No(RTId)) $No(RTId).style.display="block";
        if($No(RDId)) $No(RDId).style.display="none";
    }

    var Tid = tag0+id;
    var Did = tag1+id;

    if($No(Tid)) $No(Tid).style.display = "none";
    if($No(Did)) $No(Did).style.display = "block";

    RTId = Tid;
    RDId = Did;
}