function lightShow(a, marginTop)
 {
	a.blur();
	var o = document.getElementById('light');
	if (o)
	{
		o.style.display = 'block';
		if(marginTop)
		o.style.marginTop  = marginTop;
	}
	if ((o = document.getElementById('fade')))
	{
		o.style.height = document.body.scrollHeight;
		o.style.display = 'block';
	};
	return false;
 }
 function lightHide(a)
 {
	a.blur();
	var o = document.getElementById('light');
	if (o)
		o.style.display = 'none';
	if ((o = document.getElementById('fade')))
		o.style.display = 'none';
 	return false;
}