function getWindowWidth() 
{
    if (window.self && self.innerWidth) 
    {
        return self.innerWidth;
    }
    if (document.documentElement && document.documentElement.clientWidth) 
    {
        return document.documentElement.clientWidth;
    }
    return 0;
}

function getWindowHeight() 
{
    if (window.self && self.innerHeight) 
    {
        return self.innerHeight;
    }
    if (document.documentElement && document.documentElement.clientHeight) 
    {
        return document.documentElement.clientHeight;
    }
    return 0;
}