// File JScript

function abilita_btn(chk_obj,btn)
{
    if (document.getElementById(chk_obj).checked)
            document.getElementById(btn).removeAttribute('disabled');
       else
            document.getElementById(btn).disabled='disabled';
}

function upframe_on(e)
{
    var posx=document.body.clientWidth / 2 - 80;
    var posy=(document.documentElement.scrollTop || document.body.scrollTop) + 400;
    document.getElementById('upframe').style.top=posy+"px";
    document.getElementById('upframe').style.left=posx+"px";
    document.getElementById('upframe').style.visibility='visible';
}