function bindOnReady(win, callback, eventUtils) {
		var doc = win.document, event = {type: 'ready'};

		if (eventUtils.domLoaded) {
			callback(event);
			return;
		}

		// Gets called when the DOM is ready
		function readyHandler() {
			if (!eventUtils.domLoaded) {
				eventUtils.domLoaded = true;
				callback(event);
			}
		}

		function waitForDomLoaded() {
			// Check complete or interactive state if there is a body
			// element on some iframes IE 8 will produce a null body
			if (doc.readyState === "complete" || (doc.readyState === "interactive" && doc.body)) {
				removeEvent(doc, "readystatechange", waitForDomLoaded);
				readyHandler();
			}
		}

		function tryScroll() {
			try {
				// If IE is used, use the trick by Diego Perini licensed under MIT by request to the author.
				// http://javascript.nwbox.com/IEContentLoaded/
				doc.documentElement.doScroll("left");
			} catch (ex) {
				Delay.setTimeout(tryScroll);
				return;
			}

			readyHandler();
		}

		// Use W3C method
		if (doc.addEventListener) {
			if (doc.readyState === "complete") {
				readyHandler();
			} else {
				addEvent(win, 'DOMContentLoaded', readyHandler);
			}
		} else {
			// Use IE method
			addEvent(doc, "readystatechange", waitForDomLoaded);

			// Wait until we can scroll, when we can the DOM is initialized
			if (doc.documentElement.doScroll && win.self === win.top) {
				tryScroll();
			}
		}

		// Fallback if any of the above methods should fail for some odd reason
		addEvent(win, 'load', readyHandler);
	}
Bind a DOMContentLoaded event across browsers and executes the callback once the page DOM is initialized.
It will also set/check the domLoaded state of the event_utils instance so ready isn't called multiple times.