Think Python Code

 
function showDialog()
{
    var width = window.innerWidth;
    var height = window.innerHeight;
    
    document.getElementById("overlay").style.display = 'block';
    
    var dlg = document.getElementById("dialog");
    dlg.style.left = (width/2)-215 + "px";
    dlg.style.top = (height/2)-260 + "px";
    dlg.style.display = 'block';
}

function closeDialog()
{
    document.getElementById("overlay").style.display = 'none';
    document.getElementById("dialog").style.display  = 'none';
}

function showLoading()
{
    var width = window.innerWidth;
    var height = window.innerHeight;
    
    document.getElementById("overlay").style.display = 'block';
    
    var dlg = document.getElementById("loading");
    dlg.style.left = (width/2)-205 + "px";
    dlg.style.top = (height/2)-160 + "px";
    dlg.style.display = 'block';
}

function hideLoading()
{
    document.getElementById("overlay").style.display = 'none';
    document.getElementById("loading").style.display  = 'none';
}