function changeFrame( id ) {
    var url = "blank.php";
    var frame = document.getElementById( "content" );
    id = id.toLowerCase();

    switch ( id ){
        case "home":
            url = "announcements.php";
            break;
        case "calendar":
            url = "calendar.php";
            break;
        case "join us":
            url = "join.php";
            break;
        case "history":
            url = "history.php";
            break;
        case "director":
            url = "director.php";
            break;
        case "members":
            url = "members.php";
            break;
        case "board":
            url = "board.php";
            break;
        case "contact":
            url = "contact.php";
            break;
        default:
            break;
    }

    if( frame.src.indexOf( url ) < 0 ){
        frame.src = url;
    }
}

function displayDialog( title, url ) {
    var dialog = dijit.byId( "dialog" );
    var iFrame = document.getElementById( "dialogFrame" );

    dialog.setAttribute( "title", title );
    iFrame.src = url;
    dialog.show();
    dojo.style(dialog.containerNode,{width:"auto",height:"100%"});
}