function mVis(obj){
  id = 1;
  while(obj1=document.getElementById("mm"+id)){
    if("mm"+id!=obj){
      obj1.style.display="none";
    }
    id++;
  }
  obj = document.getElementById(obj);
  obj.style.display="block";
}

function mHid(obj){
  obj = document.getElementById(obj);
  obj.style.display="none";
}