window.addEventListener?window.addEventListener("load",so_init,false):window.attachEvent("onload",so_init);
var d=document, imgs = new Array(), imgsbanner= new Array, imgs2 = new Array, imgs3 = new Array, zInterval = null, current=0, pause=false;
function so_init() {
	if(!d.getElementById || !d.createElement)return;
	imgs = d.getElementById('fotosin').getElementsByTagName("img");
	imgs2 = d.getElementById('fotoscon').getElementsByTagName("img");
	imgs3 = d.getElementById('fotossalud').getElementsByTagName("img");
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	d.getElementById('fotosin').style.display='block';
	d.getElementById('fotoscon').style.display='block';
	d.getElementById('fotossalud').style.display='block';
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	imgs2[0].style.display="block";
	imgs2[0].xOpacity= .99;
	imgs3[0].style.display="block";
	imgs3[0].xOpacity= .99;
	setTimeout(so_xfade,6000);
}

function so_xfade() {
	cOpacity = imgs[current].xOpacity;
	nIndex = imgs[current+1]?current+1:0;

	nOpacity = imgs[nIndex].xOpacity;
	
	cOpacity-=.05; 
	nOpacity+=.05;
	
	imgs[nIndex].style.display = "block";
	imgs[current].xOpacity = cOpacity;
	imgs[nIndex].xOpacity = nOpacity;
	imgs2[nIndex].style.display = "block";
	imgs2[current].xOpacity = cOpacity;
	imgs2[nIndex].xOpacity = nOpacity;
	imgs3[nIndex].style.display = "block";
	imgs3[current].xOpacity = cOpacity;
	imgs3[nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs[current]); 
	setOpacity(imgs[nIndex]);
	setOpacity(imgs2[current]);
	setOpacity(imgs2[nIndex]);
	setOpacity(imgs3[current]);
	setOpacity(imgs3[nIndex]);
	
	if(cOpacity<=0) {
		imgs[current].style.display = "none";
		imgs2[current].style.display = "none";
		imgs3[current].style.display = "none";
		current = nIndex;
		setTimeout(so_xfade,6000);
	} else {
		setTimeout(so_xfade,50);
	}
	
	function setOpacity(obj) {
		if(obj.xOpacity>.99) {
			obj.xOpacity = .99;
			return;
		}
		obj.style.opacity = obj.xOpacity;
		obj.style.MozOpacity = obj.xOpacity;
		obj.style.filter = "alpha(opacity=" + (obj.xOpacity*100) + ")";
	}
	
}