function rotateTo(slideNumber)
{
	var currentSlide =  slideNumber;
	
	if(slideNumber == 4)
	{
		var nextSlide =  1;
	}
	else
	{
		var nextSlide = (slideNumber + 1);
	}
	
	for (var i = 0; i <= 20; i++)
	{
		setTimeout("setOpacity('slide_" + nextSlide + "', " + (i * 5) + ")", i * 70);
		setTimeout("setOpacity('slide_" + currentSlide + "', " + ((20 - i) * 5) +  ")", i * 70);
	}
	setTimeout("rotateTo(" + nextSlide + ")", 4500);	
}

function setOpacity(item, newOpacity)
{
	var item = document.getElementById(item);
	
	if(newOpacity == 100)
	{
		item.style.zIndex = 4;
	}
	else
	{
		item.style.zIndex = 3;
	}
	item.style.MozOpacity 	= newOpacity / 100;
	item.style.opacity    	= newOpacity / 100;
	item.style.KhtmlOpacity = (newOpacity/ 100);
 	item.style.filter 		= "alpha(opacity=" + newOpacity + ")"; 
}