function hideElement(p_id)
{
if (document.getElementById(p_id).className != "hideElement")
{
document.getElementById(p_id).className = "hideElement";
}
}

function showElement(p_id)
{
if (document.getElementById(p_id).className != "showElement")
{
document.getElementById(p_id).className = "showElement";
}
}

function popup(mylink, windowname)
{
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
else
   href=mylink.href;
window.open(href, windowname, 'width=420,height=600,scrollbars=yes');
return false;
}