var slideidx = 0;
var opacity = 0;

function set_opacity (obj, opacity)
{
    opacity = (opacity == 100)?99.999:opacity;
    // IE/Win
    obj.style.filter = "alpha(opacity:"+(100-opacity)+")";
    // Safari<1.2, Konqueror
    obj.style.KHTMLOpacity = opacity/100;
    // Older Mozilla and Firefox
    obj.style.MozOpacity = opacity/100;
    // Safari 1.2, newer Firefox and Mozilla, CSS3
    obj.style.opacity = opacity/100;
}

function img_circulate ()
{
    if (document.getElementById) {	
	var ss = document.getElementById("slideshow");
	if (ss)
	    {
		slides = ss.getElementsByTagName("img");
		opacity = (opacity+5)%100;
		if (opacity == 0)
		    {
			bottom_slide =
			    (slideidx + slides.length - 1) % slides.length;
			slides[bottom_slide].style.opacity = 0;
			slides[bottom_slide].style.zIndex = 0;
			slides[slideidx].style.opacity = 1;
			slides[slideidx].style.zIndex = 0;
			slideidx = (slideidx+1) % slides.length;
			slides[slideidx].style.zIndex = 1;
			window.setTimeout("img_circulate()", 9000);
			return;
		    }
		set_opacity (slides[slideidx], opacity);
	    }
    }
    window.setTimeout("img_circulate()", 50);
}

var slideidx2 = 0;
var opacity2 = 0;

function img_circulate2 ()
{
    if (document.getElementById) {
	var ss = document.getElementById("slideshow2");
	if (ss)
	    {
		slides2 = ss.getElementsByTagName("img");
		opacity2 = (opacity2+5)%100;
		if (opacity2 == 0)
		    {
			bottom_slide =
			    (slideidx2 + slides2.length - 1) % slides2.length;
			slides2[bottom_slide].style.opacity = 0;
			slides2[bottom_slide].style.zIndex = 0;
			slides2[slideidx2].style.opacity = 1;
			slides2[slideidx2].style.zIndex = 0;
			slideidx2 = (slideidx2+1) % slides2.length;
			slides2[slideidx2].style.zIndex = 1;
			window.setTimeout("img_circulate2()", 10000);
			return;
		    }
		set_opacity (slides2[slideidx2], opacity2);
	    }
    }
    window.setTimeout("img_circulate2()", 100);
}

img_circulate();
img_circulate2();