$(document).ready(function(){
    function infoUsuario(){
        
        var id = "#dialog2";
    
        var maskHeight = $(document).height();
        var maskWidth = $(window).width();
    
        $('#mask').css({'width':maskWidth,'height':maskHeight});

        $('#mask').fadeIn(1000);    
        $('#mask').fadeTo("slow",0.8);    
    
        //Get the window height and width
        var winH = $(window).height();
        var winW = $(window).width();
              
        $(id).css('top',  winH/2-$(id).height()/2);
        $(id).css('left', winW/2-$(id).width()/2);
    
        $(id).fadeIn(); 
     }
    
    $('.window #close').click(function (e) {
        e.preventDefault();
        
        $('#mask').hide();
        $('.window').hide();
    });        
    
    $('#mask').click(function () {
        $(this).hide();
        $('.window').hide();
    });
    
});