function ToggleItemVisibility(chkBox, itemId)
{
    var item = document.getElementById(itemId);
    
    if (chkBox.checked)
        item.style.display = "block";
    else
        item.style.display = "none";        
}
function OpenPopup(URL, windowName)
{
    newWindow = window.open(URL, windowName, "width=500,height=320");    
    newWindow.focus(); 
}