/*****
Image Cross Fade Redux
Version 1.0
Last revision: 02.15.2006
steve@slayeroffice.com
Please leave this notice intact. 
Rewrite of old code found here: http://slayeroffice.com/code/imageCrossFade/index.html

adapted with additional code for homenews_text and onClick events added at worldallergy.org 7/08
*****/

window.addEventListener?window.addEventListener("load",homenews_so_init,false):window.attachEvent("onload",homenews_so_init);

var d=document, homenews_imgs = new Array(), homenews_text = new Array(), zInterval = null, homenews_current=0, homenews_texthomenews_current=0, pause=false, blnReboot = false; var currTO = 0; // added a homenews_current timeout id so it can be cleared onClick

function homenews_so_init() {
	if(!d.getElementById || !d.createElement)return;
	if(!d.getElementById("homenewsFade"))return;
	homenews_imgs = d.getElementById("homenewsFade").getElementsByTagName("img");
	for(i=1;i<homenews_imgs.length;i++) homenews_imgs[i].xOpacity = 0;
	homenews_imgs[0].style.display = "block";
	homenews_imgs[0].xOpacity = .99;
	
	
	homenews_text = d.getElementById("homenewsFade").getElementsByTagName("p");
	for(i=1;i<homenews_text.length;i++) homenews_text[i].xOpacity = 0;
	homenews_text[0].style.display = "block";
	homenews_text[0].xOpacity = .99;
	
	currTO = setTimeout(homenews_so_xfade,10000);
}

function homenews_so_xfade() {
	cOpacity = homenews_imgs[homenews_current].xOpacity;
	homenews_nIndex = homenews_imgs[homenews_current+1]?homenews_current+1:0;

	nOpacity = homenews_imgs[homenews_nIndex].xOpacity;
	
	cOpacity-=.05; 
	nOpacity+=.05;
	
	homenews_imgs[homenews_nIndex].style.display = "block";
	homenews_imgs[homenews_current].xOpacity = cOpacity;
	homenews_imgs[homenews_nIndex].xOpacity = nOpacity;
	
	homenews_setOpacity(homenews_imgs[homenews_current]); 
	homenews_setOpacity(homenews_imgs[homenews_nIndex]);
	
	
	ctOpacity = homenews_text[homenews_texthomenews_current].xOpacity;
	homenews_ntIndex = homenews_text[homenews_texthomenews_current+1]?homenews_texthomenews_current+1:0;

	ntOpacity = homenews_text[homenews_ntIndex].xOpacity;
	
	ctOpacity-=.05; 
	ntOpacity+=.05;
	
	homenews_text[homenews_ntIndex].style.display = "block";
	homenews_text[homenews_texthomenews_current].xOpacity = ctOpacity;
	homenews_text[homenews_ntIndex].xOpacity = ntOpacity;
	
	homenews_setOpacity(homenews_text[homenews_texthomenews_current]); 
	homenews_setOpacity(homenews_text[homenews_ntIndex]);
	
		
	if(cOpacity<=0) {
		homenews_imgs[homenews_current].style.display = "none";
		homenews_text[homenews_texthomenews_current].style.display = "none"; 
		homenews_current = homenews_nIndex;
		homenews_texthomenews_current = homenews_ntIndex;
		if(!blnReboot){
			currTO = setTimeout(homenews_so_xfade,10000);
		}
	} else {
		if(!blnReboot){
			currTO = setTimeout(homenews_so_xfade,10);
		}
	}
	

	
}

	function homenews_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) + ")";
	}