function hidediv(divId){
 var arr = document.getElementById(divId)
  if ( arr!= null ) {
    if(arr.style.display=='none') arr.style.display = 'block';
    else arr.style.display = 'none';
  } 
}

function hidediv2(divId,divId2){
  var arr = document.getElementById(divId)
  if ( arr!= null ) {
    if(arr.style.display=='none') arr.style.display = 'block';
    else arr.style.display = 'none';
  }
  var arr2 = document.getElementById(divId2)
  if( arr2!= null ) {
      arr2.style.display = 'none';
  }
}