this.CalCompare = function CalCompare(roomCode){
    var myTable = $('roomType-'+roomCode).getElementsByTagName('table')[0];
    RoomsTable[roomCode] = myTable.cloneNode(myTable);
    var myTRs = myTable.getElementsByTagName('tbody')[0].getElementsByTagName('tr');
    for(var i=0;i<myTRs.length;i++){
      if(myTRs[i].getElementsByTagName('td')[0].getElementsByTagName('input')[0].checked==false){
/*        myTable.getElementsByTagName('tbody')[0].removeChild(myTRs[i]); removeChild modify the counter dunno why*/
        myTRs[i].innerHTML = ''; 
      }
    }
  };