/**
* @projectDescription	Script for global navigation
* 
* @author	Ryan Sullivan ryan@ryansullivan.name
* @version	1.0
* requires MooTools 1.2+
*/
if(!$defined(ryansullivan)){var ryansullivan={};}
ryansullivan.navigation=function($,win,doc,me){
	var _navSlideFxOptions = {duration:1500,transition:'bounce:out'};

	// initialize
	win.addEvent('domready',function(){
		me = ryansullivan.navigation;
		$$('a[href^=http]').each(function(el){
			var href = (el.get('href')||'').toLowerCase();
			if(href.contains(win.location.hostname.toLowerCase())){return;}
			if((el.get('onclick')||'').contains('window.open')){el.erase('onclick');}
			el.addEvents({
				'click':function(e){
					e.stop();
					win.open(el.get('href'));return;
				}
			});
		});
		$$('#nav_main li').addEvents({
			'click':function(e){
				e.stopPropagation();
				if(Browser.Platform.ipod){return;}
				var subNav = this.getElement('ul');
				if(!subNav||e.target.get('tag')=='ul'){return;}
				var posY = $('nav_main').getElement('ul').getPosition().y-win.getScroll().y;
				if(posY<1){
					toggleSubNav(subNav);
				} else if(subNav.getSize().x<1) {
					subNav.getElements('li').fade('hide');
					toggleSubNav(subNav).getElements('li').fade('in');
					$('nav_main').getElement('ul').set('tween',_navSlideFxOptions).tween('margin-top',subNav.getChildren().length*16+20);
					return;
				}
				$('nav_main').getElement('ul').set('tween',_navSlideFxOptions).tween('margin-top',posY>0?0:subNav.getChildren().length*16+20);
			}
		});
	});

	win.addEvent('load',function(){
		if(Browser.Platform.ipod&&win.getScroll().y<1){
			setTimeout(function(){win.scrollTo(0,1);},100);
		}
	});

	/*win.addEvent('scroll',function(){
		$('nav_main').setStyle('top',win.getScroll().y);
	});*/

	var toggleSubNav=function(el){
		$$('#nav_main ul ul').setStyle('width',0);
		return el.set('styles',{
			'width':$('nav_main').getElement('ul').getSize().x,
			'top':-(el.getChildren().length*16+111)
		});
	};

	// public members
	return{
	};
}(document.id,window,document);