function fade()
{
	var elems = document.getElementsByTagName('div');
	for (e=0;e<elems.length;e++)
	{
		if (elems[e].id.indexOf('fade') > -1)
		{
			var random = Math.round(6000*Math.random());
			setTimeout("opacity('"+elems[e].id+"', 0, 60, 5000)", random);
		}
	}
}

function opacity(id, opacStart, opacEnd, millisec)
{
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;
	var random = Math.round(6000*Math.random());

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd)
	{
		for(i = opacStart; i >= opacEnd; i--)
		{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
		setTimeout("opacity('" + id + "','" + opacEnd + "','" + opacStart + "','" + millisec + "')",((timer * speed) + random));
	}
	else if(opacStart < opacEnd)
	{
		for(i = opacStart; i <= opacEnd; i++)
		{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
		setTimeout("opacity('" + id + "','" + opacEnd + "','" + opacStart + "','" + millisec + "')",((timer * speed) + random));
	}
}

//change the opacity for different browsers
function changeOpac(opacity, id)
{
	var object = document.getElementById(id).style;
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}