var timeout = 500;
var closeTimer = 0;
var ddlMenuItem = 0;

function openMenu(id)
    {
        cancelTmr();
        closeMenu();
        
        ddlMenuItem = document.getElementById(id);
        ddlMenuItem.style.display = 'block';
    }

function closeMenu()
    {
        if (ddlMenuItem)
            {
                ddlMenuItem.style.display = 'none';
            }
    }

function closeTmr()
    {
        closeTimer = window.setTimeout(closeMenu, timeout);
    }

function cancelTmr()
    {
        if (closeTmr)
            {
                window.clearTimeout(closeTimer);
                closeTimer = null;
            }
    }

function promoChg(id)
    {
        if (id.src.indexOf('_up') == -1)
            {
                id.src = id.src.replace('_down', '_up');
            }
        else
            {
                id.src = id.src.replace('_up', '_down');
            }
    }