function show_hide(element)
{
    var div = document.getElementById(element);
    
    if (div.style.display == "none")
    {
        div.style.display = "block";
    }
    else div.style.display = "none";
}

function hide_all_help()
{
    arrayOfDivs = document.getElementsByTagName('div');
    
    for (var i = 0; i < arrayOfDivs.length; i++)
    {
        if (arrayOfDivs[i].className == "section_help")
        {
            arrayOfDivs[i].style.display = "none";
        }  
    }
}