function showMessage(msg, idObj) {
        var id; 
        if (idObj == undefined)
            id = "lbMsg";
        else
            id = idObj;
            
            
        document.getElementById(id).innerHTML = msg;
    }
    
    function ocultaDivNovo(){
        var div = document.getElementById("novoDiv");
        div.style.display = "none";
    }
    
    
   
    
    function mostrarDiv(obj){
        var div = obj;
        var div2;
        
        if (div.id == "divA"){
            div2 = document.getElementById('divB');        
        
            div.style.zIndex = '2';
            div2.style.zIndex = '1';
        }
        else{
            div2 = document.getElementById('divA');        
        
            div.style.zIndex = '2';
            div2.style.zIndex = '1';
        }
    }