function showDiv(divToShow)
{
    $get(divToShow).style.display="block";
}

function hideDiv(divToHide)
{
    $get(divToHide).style.display = "none";
}

function showPopup(popupToShow)
{
    $get(popupToShow).style.display="block";
    showGrayBackground();
}

function hidePopup(popupToHide)
{
    $get(popupToHide).style.display = "none";
    hideGrayBackground();
}

function showGrayBackground()
{   
    $get('GrayBackground').style.display="block";
}

function hideGrayBackground()
{
    $get('GrayBackground').style.display = "none";
}

function popupWindow(url, name, width, height) 
{
    params  = 'width=' + width;
    params += ', height=' + height;
    params += ', location=yes';
    params += ', menubar=no';
    params += ', resizable=yes';
    params += ', scrollbars=yes';
    params += ', status=no';
    params += ', toolbar=no';


    newwin=window.open(url, name, params);
    if (window.focus) {newwin.focus()}
    return false;
}


function getObjectPosition(obj)
{
    var curleft = curtop = 0;

    if (obj.offsetParent)
    {
        do
        {
            curleft += obj.offsetLeft;
            curtop += obj.offsetTop;
        } while (obj = obj.offsetParent);
        return [curtop, curleft];
    }
}