function toggle_element(n)
{
    var e = document.getElementById(n);
    e.style.display = (e.style.display?'':'none');
}

function hide_element_by_name(n)
{
    var e = document.getElementById(n);
    e.style.display = 'none';
}

function pc_set_form_field_value_by_id(element, value)
{
    var x = document.getElementById(element);
    x.value = value;
}

function setVisible(obj)
{
	obj = document.getElementById(obj);
	obj.style.visibility = (obj.style.visibility == 'visible') ? 'hidden' : 'visible';
}