var specialFocus = false;
function setPageRespondsToEnter(bool)
{
    specialFocus = bool;
}

function blockEnterSubmit(evt)
{
    var keyCode = (evt) ? evt.keyCode : ((window.event)?event.which:null);
    if(keyCode == 13 || keyCode == 3)
    {
        return specialFocus;
    }
    else return true;
}