[HTML]Recherche une balise

function align()
{

	var lmt = document.getElementById('menu');
	var container = document.getElementById('conteneur');

	if(lmt && container)
	{
	
		var containerHeight;
		if (container.innerWidth)
		{
			containerHeight = container.innerHeight;
		}
		else
		{
			containerHeight = container.clientHeight;
		}
		var lmtHeight;
		if (lmt.innerWidth)
		{
			lmtHeight = lmt.innerHeight;
		}
		else
		{
			lmtHeight = lmt.offsetHeight;
		}
		
		var y = Math.ceil((containerHeight - lmtHeight) / 2);
		if(y < 0)
		{
			y = 0;
		}
		
		lmt.style.position = "relative";
		lmt.style.top = y + "px";
		
	}

}