function display(element) {
     alert('You clicked the button');  
    if (document.layers && document.layers[element] != null)
        document.layers[element].visibility = 'visible';
    else if (document.all)
        document.all[element].style.visibility = 'visible';
}

function hide(element) {
    if (document.layers && document.layers[element] != null)
        document.layers[element].visibility = 'hidden';
    else if (document.all)
        document.all[element].style.visibility = 'hidden';
}




 function showAnAlert() {
    alert('You clicked the button');
 }