function DisplayWait(bool)
{
    if (bool == 1)
    {
        var clientWidth = document.documentElement.clientWidth;
        var clientHeight = document.documentElement.clientHeight;
        var scrollLeft = document.documentElement.scrollLeft;
        var scrollTop = document.documentElement.scrollTop;

        var obj = document.getElementById('div_wait');

        if (clientWidth > 650)
        {
            obj.style.left = '292px';
        }
        else
        {
            obj.style.left = (clientWidth / 2 + scrollLeft - 33).toString() + 'px';
        }

        //obj.style.top = (clientHeight / 2 + scrollTop - 33).toString() + 'px';
        obj.style.top = '150px';
        document.getElementById('div_wait').style.display = 'block';
    }
    else
    {
        document.getElementById('div_wait').style.display = 'none';
    }
}