// JavaScript Document
<!--
/* Script by: www.jtricks.com
 * Version: 20090221
 * Latest version:
 * www.jtricks.com/javascript/blocks/showinghiding.html
 */
function showPageElement(what)
{
    var obj = typeof what == 'object'
        ? what : document.getElementById(what);

    obj.style.display = 'block';
    return false;
}

function hidePageElement(what)
{
    var obj = typeof what == 'object'
        ? what : document.getElementById(what);

    obj.style.display = 'none';
    return false;
}

function togglePageElementVisibility(what)
{
    var obj = typeof what == 'object'
        ? what : document.getElementById(what);

    if (obj.style.display == 'none')
        obj.style.display = 'block';
    else
        obj.style.display = 'none';
    return false;
}