var tmoutCollapse;
var activeLink;

function menuover(link)
{
    mouseovermenu(null);

    var idSub = link.getAttribute("sub");
    var subt = document.getElementById( idSub );

    if( !subt ) return;

    subt.style.display = "block";

    var cds = getPageCoords(link);

    subt.style.left=cds.x + "px";
    subt.style.top=cds.y+45 + "px";
    
    if( activeLink && (activeLink != link) ) collapseMenu();
    activeLink = link;
}

function collapseMenu()
{
    if( !activeLink ) return;

    var idSub = activeLink.getAttribute("sub");
    var subt = document.getElementById( idSub );

    if( !subt ) return;

    subt.style.display = "none";
    window.clearTimeout( tmoutCollapse );
    tmoutCollapse = null;
    activeLink = null;
}

function menuout()
{
    tmoutCollapse = window.setTimeout( "collapseMenu();", 1000 );
}

function mouseovermenu(tblmenu)
{
    if( !tmoutCollapse ) return;

    window.clearTimeout( tmoutCollapse );
    tmoutCollapse = null;
}