HD.util.DOM = {
	onDOMReady : function(callback) {
		YAHOO.util.Event.onDOMReady(callback);
	},
	
	onAvailable : function(element, callback) {
		YAHOO.util.Event.onAvailable(element, callback);
	},
	
	onContentReady : function(element, callback) {
		YAHOO.util.Event.onContentReady(element, callback);
	},
	
	hide : function(element) {
		HD.addClass(element, HD.CSS_CLASSES.HIDDEN);
	},
	
	show : function(element) {
		HD.removeClass(element, HD.CSS_CLASSES.HIDDEN);
	}
};