function showTip(id, inputId) {
        var panel = document.getElementById(id);
        var inputField = document.getElementById(inputId);
        
        // show/hide tool tip layer               
        if (panel.style.display != 'block') {
            panel.style.display = 'block';
        }
        else {
            panel.style.display = 'none';
        }
        
        //positioning
        panel.style.position = 'absolute';
        var width = inputField.style.width.toString();
        var w = findPosX(inputField) + parseInt(width.substring(0, width.length - 2));
        var h = findPosY(inputField);
        panel.style.left = w + 3 + 'px';
        panel.style.top = h + 'px';
    }