function openlb(div)
{
document.getElementById(div).style.visibility='visible';
document.getElementById('thebd').style.visibility='visible';
var forms = document.getElementsByTagName("form");
for (var i = 0, l = forms.length; i < l; ++i) {
forms[i].style.visibility = "hidden";
}
posy = document.documentElement.scrollTop;
posx = document.documentElement.scrollLeft;
window.scroll(0, 0);
}

function closelb(div)
{
document.getElementById(div).style.visibility='hidden';
document.getElementById('thebd').style.visibility='hidden';
var forms = document.getElementsByTagName("form");
for (var i = 0, l = forms.length; i < l; ++i) {
forms[i].style.visibility = "visible";
}
window.scroll(posx, posy);
}