var freq = 500;
var showFullMivaTextIntervalId = null;

function showFullMivaText()
{
	if (showFullMivaTextIntervalId != null) 
		window.clearInterval(showFullMivaTextIntervalId);
	document.getElementById("MivaExtentAd").style.display = '';	
}

function activateMivaTimer()
{
	showFullMivaTextIntervalId = window.setInterval(hideFullMivaText, freq);
}

function hideFullMivaText()
{
	window.clearInterval(showFullMivaTextIntervalId);
	document.getElementById("MivaExtentAd").style.display = 'none';
}