function cligno (a) 
{
	var cpt;
	var i = document.getElementById('clignotant').style.opacity;
	i = Number(i);
	if (i == '') { i = 1; }
	
if (a == 'neg')
	{
		if (i > 0.1)
		{
			i = i-0.10;
			document.getElementById('clignotant').style.opacity=i;
			document.getElementById('clignotant').style.filter = 'alpha(opacity=' + i*100 + ')';
			if (i <= 0.1) { a = 'pos'; }
		}
	}
	
	if (a == 'pos')
	{
		if (i < 1.2)
		{
			i = i+0.10;
			document.getElementById('clignotant').style.opacity=i;
			document.getElementById('clignotant').style.filter = 'alpha(opacity=' + i*100 + ')';
			if (i >= 1.2) { a = 'neg'; }
		}
	}
	
	cpt = setTimeout("cligno('"+a+"')",100);
	
	
}