function ShowLoadingPanel() {
    centerElementOnScreen(document.getElementById("RadLoadingPanel1"));
}

function centerElementOnScreen(element)
{
    var scrollTop = document.body.scrollTop;
    var scrollLeft = document.body.scrollLeft;
    var viewPortHeight = document.body.clientHeight;
    var viewPortWidth = document.body.clientWidth;
    if (document.compatMode == "CSS1Compat")
    {
     viewPortHeight = document.documentElement.clientHeight;
     viewPortWidth = document.documentElement.clientWidth;
     scrollTop = document.documentElement.scrollTop;
     scrollLeft = document.documentElement.scrollLeft;
    }
    var topOffset = Math.ceil(viewPortHeight/2 - element.offsetHeight/2);
    var leftOffset = Math.ceil(viewPortWidth/2 - element.offsetWidth/2);
    var top = scrollTop + topOffset - 40;
    var left = scrollLeft + leftOffset - 70;
       element.style.position = "absolute";
    element.style.top = top + "px";
    element.style.left = left + "px";
    element.style.display = "block";
}

function HideLoadingPanel() {
    var element = document.getElementById("RadLoadingPanel1");
    element.style.display = "None";
}