/**
 * SWFMacMouseWheel v2.0: Mac Mouse Wheel functionality in flash - http://blog.pixelbreaker.com/
 *
 * SWFMacMouseWheel is (c) 2007 Gabriel Bucknall and is released under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 *
 * Modded by Robert M. Hall - rhall@impossibilities.com 
 * Adjusted following functionality:
 * 1. Watch for events related only to flash content and not the container page
 * 2. Fixed to dispatch mousewheel events only to specific intance ID's that were registered, this
 *    allows multiple SWFobject embeds on a page to use swfmacmousewheel and they will only respond
 *    to their specific target ID's when the event.target.is passed. This way only the currently active item will receive a dispatch event.
 * 3. Works with SWFObject 2.1
 * 4. No longer throws an error on IE/PC platforms because of a null object
 * 5. Works on Safari for PC
 *
 * Dependencies: 
 * SWFObject v2.1 <http://code.google.com/p/swfobject/>
 * Copyright (c) 2007 Geoff Stearns, Michael Williams, and Bobby van der Sluis
 * This software is released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
 *
 * Requires a few lines of changes to the AS2 and AS3 code to support the PC version of Safari
 * as well as an additional Flashvar paramater, set flashvars.browser = Browser.name;
 * These changes are only required for Safari on PC - all other modifications noted above are contained solely in this JavaScript
 * Safari PC support based on code/suggestions from Richard "RaillKill" Rodney of Hypermedia - http://railkill.free.fr/
 *
 * Browser detect part from http://www.quirksmode.org/js/detect.html
 *
 */
 
var Browser = {init: function() {
		this.name = this.searchString(this.dataBrowser) || "unknown"
	},
	
	searchString:function(data) {
		for(var A=0;A<data.length;A++) { 
			var B=data[A].string;
			var C=data[A].prop;
			this.versionSearchString=data[A].versionSearch || data[A].identity;
			if(B) {
				if(B.indexOf(data[A].subString)!=-1) {
					return data[A].identity;
				}
			} else if (C) {
				return data[A].identity;
			}
		}
	},
	dataBrowser:[{
		string:navigator.vendor,
		subString:"Apple",
		identity:"Safari"
	}]};
 
Browser.init();
 
var swfmacmousewheel = function() {
	if(!swfobject)return null;

	var u=navigator.userAgent.toLowerCase();
	var p=navigator.platform.toLowerCase();

	var d=p?/mac/.test(p):/mac/.test(u);
	// alert(Browser.name);
	if(Browser.name != "Safari" && !d) return {registerObject: function() {}};

	var k = [];

	var r = function(event) {
		var o=0;
		if(event.wheelDelta) {
			o=event.wheelDelta/120;
			if(window.opera) o= -o;
			if(Browser.name=="Safari") o=o*3;
		} else if(event.detail) {
			o= -event.detail;
		}
		if(event.preventDefault) { 
			event.preventDefault();
		}
		return o;
	};

	var __wheel = function(event) {

		if(event.target.id == "" || event.target.id == undefined) {
			return; 
		} else {
			var o = r(event);
			var c;
			var tmpI = null;
			for(var i=0;i<k.length;i++) {
				c = swfobject.getObjectById(k[i]);
				if(typeof(c.externalMouseEvent) == 'function' && event.target.id == k[i]) {
					tmpI=i;
				}
			}
			if(tmpI !=null) {
				c = swfobject.getObjectById(k[tmpI]);
				c.externalMouseEvent(o);	
			} else {
				window.scrollBy(0,-o);
			}
		}
	};

	return {
		registerObject:function(m) {
			k.push(m);
			if(window.addEventListener) window.addEventListener('DOMMouseScroll',__wheel,false);
			window.onmousewheel = document.onmousewheel = __wheel;
		}
	};
}();