var LIB = new Object();
var imgs = new Array();
var zInterval = null;
var current = 0;

LIB.Functions = {
	
	init_crossfade : function() {
		if (!document.getElementById || !document.createElement) {
			return;
		}
		
		imgs = $('photo').getElementsByTagName('img');
		
		for (var i = 1; i < imgs.length; i++) {
			imgs[i].xOpacity = 0;
		}
		
		imgs[0].style.display = 'block';
		imgs[0].xOpacity = .99;
		
		setTimeout(LIB.Functions.fade, 4000);
	},
	
	fade : function() {
		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;
		
		LIB.Functions.setOpacity(imgs[current]); 
		LIB.Functions.setOpacity(imgs[nIndex]);
		
		if (cOpacity <= 0) {
			imgs[current].style.display = 'none';
			current = nIndex;
			
			setTimeout(LIB.Functions.fade, 4000);
		}
		else {
			setTimeout(LIB.Functions.fade, 50);
		}
	},
	
	setOpacity : function(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) + ')';
	}
	
};