function fadeIn(panelId, step)
{
	panel = document.getElementById(panelId);

	if (panel.style.display == 'none')
		panel.style.display = 'block';

	panel.style.filter = 'alpha(opacity=' + (step++) + ')';	// for IE   
	panel.style.opacity = (step++)/100;						// for FF
	panel.style.MozOpacity = (step++)/100;
	panel.style.KhtmlOpacity = (step++)/100;
	
	if (step <= 100)
		setTimeout('fadeIn(\'' + panelId + '\',' + step + ')', 10);
}

function fadeOut(panelId, step)
{
	panel = document.getElementById(panelId);
	
	panel.style.filter = 'alpha(opacity=' + (step--) + ')';	// for IE	
	panel.style.opacity = (step--)/100;						// for FF
	panel.style.MozOpacity = (step--)/100;
	panel.style.KhtmlOpacity = (step--)/100;
	
	if (step > 0)
		setTimeout('fadeOut(\'' + panelId + '\',' + step + ')', 10);
	else
		panel.style.display = 'none';
}