function swapDiv( divNum, expanding )
{
    if (expanding)
    {
        setIdProperty("c" + divNum, "display", "none");
        setIdProperty("e" + divNum, "display", "inline");
    }
    else
    {
        setIdProperty("e" + divNum, "display", "none");
        setIdProperty("c" + divNum, "display", "inline");
    }
}
function setIdProperty( id, property, value )
{
        var styleObject = document.getElementById( id );
        if (styleObject != null)
        {
            styleObject = styleObject.style;
            styleObject[ property ] = value;
        }
}