function ns_query_object_zindex()
{
	return this.css.zIndex;
}

function ns_set_object_zindex(arg)
{
	return this.css.zIndex = arg;
}

function query_object_zindex()
{
	return this.css.style.zIndex;
}

function set_object_zindex(arg)
{
	return this.css.style.zIndex = arg;
}

function ns_hide_object()
{
	this.css.visibility = "hide";
}

function ns_show_object()
{
	this.css.visibility = "show";
}

function hide_object()
{
	this.css.style.visibility = "hidden";
}

function show_object()
{
	this.css.style.visibility = "visible";
}