/**
    * Tooltips
    * 
    * @author Dan Ladds <dan@bfinternet.co.uk>
    **/
    
    /*---- config ----*/
        
    var offsetLeft = 15;
    var offsetTop = -15;
        
    /*----/config ----*/
    
    /**
    * Align a tooltip
    **/
    
    function align (number, x, y)
    {
        var box = document.getElementById('box' + number);
        if (document.getElementById('ukmap'))
        {
            var img = document.getElementById('ukmap');
        }
        else if (document.getElementById('delmap'))
        {
            var img = document.getElementById('delmap');
        }
        else
        {
            return false;
        }
        
        var imgpos = getPos (img);
        
        box.style.left = imgpos[0] + x + offsetLeft + "px";
        box.style.top =  imgpos[1] + y + offsetTop + "px";
    }
    
    /**
    * Show the dropdown menu
    **/
    
    function showTip (number, x, y)
    {
        // Align
        align (number, x, y);
    
        // Show
        var box = document.getElementById('box' + number);
        
        if (box)
        {
            box.style.display = "block";
        }
        
    }
    
    /**
    * Hide the dropdown menu
    **/
    
    function hideTip (number)
    {        
        // Hide
        var box = document.getElementById('box' + number);
        
        if (box)
        {
            box.style.display = "none";
        }
    }