function ToggleContent(header_id,content_id)
{
        if (document.getElementById(header_id).className == "HeaderBlock")
        {
        document.getElementById(header_id).className = "HeaderBlockOff";
        document.getElementById(content_id).style.display = "none";
        }
        else
        {
        document.getElementById(header_id).className = "HeaderBlock";
        document.getElementById(content_id).style.display = "block";
        }
        
}