function br(url, target) 
{
	var w = 600;
	var h = 450;

	var l = Math.round((screen.width / 2) - (w / 2));
	var t = Math.round((screen.height / 2) - (h / 2));

	if (target && target.location) 
	{
		target.location.href = url;
	} else 
	{
		window.open(url, "belbios", "width=" + w + ",height=" + h + ",left=" + l + ",top=" + t + ",status=yes");
	}
}


function toggleElement(id)
{
	var obj = document.getElementById(id);
	obj.style.display = (obj.style.display == 'none' ? 'inline' : 'none');
}