function showDiv(id) 
{
    var myLink = 'link' + id;
    var myName = 'menu' + id;

    var elemToShow = document.getElementById(myName);
    var elemParent = document.getElementById(myLink);
    if (elemToShow != null && elemParent != null) 
    {
        try{
            elemToShow.style.top = elemParent.offsetTop + elemParent.offsetHeight;
            elemToShow.style.left = elemParent.offsetLeft;
        	elemToShow.style.visibility = 'visible';
        } catch (E) {

        }
    }
}

function hideDiv(id)
{
    var myName = 'menu' + id;
    var elemToHide = document.getElementById(myName);
    if (elemToHide != null) 
    {
        try {
            elemToHide.style.visibility = 'hidden';
        } catch (E) {
        }
    }
}

function highLightDiv (name,bgcolor,fontcolor)
{
    document.getElementById(name).getElementsByTagName("a")[0].style.color = fontcolor;
    document.getElementById(name).style.backgroundColor = bgcolor;
}