if (typeof(HARMONY) != 'object') HARMONY = {};

HARMONY.Navigation	= function() {

	
	var initCrumb	= function() {
		var crumbUL	= YAHOO.util.Dom.getElementsByClassName('crumb', 'ul', 'main');
		if (crumbUL) {
			var i, l;
			for (i=0, l=crumbUL.length; i<l; i++) {
						
				var crumbLIs	= crumbUL[i].getElementsByTagName('li');
			
				if (crumbLIs && crumbLIs[0]) {
					var LI	= document.createElement('li');
					var A	= document.createElement('a');
					A.setAttribute('id', 'backlink');
					A.setAttribute('href', '#');
					var TXT		= document.createTextNode('< Back');
					var PIPE	= document.createTextNode(' | ');
					A.appendChild(TXT);
					YAHOO.util.Event.addListener(A, 'click', function(e){
						YAHOO.util.Event.stopEvent(e);
						if (window.history.length>0){
							window.history.back();
						}
						return false;
					});
					LI.appendChild(A);
					LI.appendChild(PIPE);
					crumbUL[i].insertBefore(LI, crumbLIs[0]);
				}
			
			}
			
		}
	}
	

	return {
		
		
		init: function() {
			
			YAHOO.util.Event.onContentReady('main', initCrumb);
			
		}
		
	}
	
}();

HARMONY.Navigation.init();