//++++++++++++++++++++++++++++//
//Image cross fader
//++++++++++++++++++++++++++++//
var imgs = new Array();
var zInterval = null;
var current=0;
var pause=false;
var time = 3000;

function initImageFade() {
   document.getElementById("logo").style.zIndex= "999";
   
   imgs = document.getElementById("headerImageContainer").getElementsByTagName("img");
   
   for(i = 1;i < imgs.length; i ++ ){
       imgs[i].xOpacity = 0;
	}
    imgs[0].style.display = "block";
    imgs[0].xOpacity = .99;
    setTimeout( imageCrossFade , time);
   }

function imageCrossFade() {

        nIndex = imgs[current+1]?current+1:0;
        cOpacity = imgs[current].xOpacity;
	nOpacity = imgs[nIndex].xOpacity;

	   if ((navigator.userAgent.indexOf('iPhone') != -1) || (navigator.userAgent.indexOf('iPod') != -1) || (navigator.userAgent.indexOf('iPad') != -1)) {
		cOpacity -=1; 
	        nOpacity +=1;
	   }else {
                cOpacity -=.05; 
	        nOpacity +=.05;
	   }
                
	imgs[nIndex].style.display = "block";
	imgs[current].xOpacity = cOpacity;
	imgs[nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs[current]); 
	setOpacity(imgs[nIndex]);
	
	if(cOpacity <= 0) {
	   imgs[current].style.display = "none";
	   current = nIndex;
	   setTimeout( imageCrossFade , time);
	} else {

	   
	   if ((navigator.userAgent.indexOf('iPhone') != -1) || (navigator.userAgent.indexOf('iPod') != -1) || (navigator.userAgent.indexOf('iPad') != -1)) {
		setTimeout( imageCrossFade , 1);
	   }else {
                setTimeout( imageCrossFade , 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) + ")";
	}
	
}