function toggle(id)
{
el = document.all ? document.all[id] : document.getElementById(id);
if (el.style.display == "none")
{
el.style.display = "block";
}
else{
el.style.display = "none";
}}		
function chgVisibility(id) {
elVis = document.all ? document.all[id] : document.getElementById(id);
if (elVis.style.visibility == "hidden") elVis.style.visibility = "visible";
else elVis.style.visibility = "hidden";
}