var isIPad = navigator.userAgent.match(/iPad/i);
var isIPhone = navigator.userAgent.match(/iPhone/i);

$(function(){
	var gNav = $('div#gNav div#gNavInner > ul');
	var gNavImgs = gNav.find('> li > a > img');
	var gSNavImgs = gNav.find('.gSNav img');
	var activeId;
	
	/*
	$.fn.getBgImgUrl = function() {
		var pattern = /url\(|\)|"|'/g;
		return $(this).css('backgroundImage').replace(pattern,'');
	}*/
	
	//preload
	gSNavImgs.each(function() {
		var _rStr = '.jpg';
		var _t = $(this);
		var _pAttr = $(this).parents('li').attr('id');
		
		if(!($.browser.msie && $.browser.version < 7)) {
		    if($('body').hasClass('bHome')) {			
			    if(_pAttr === 'gSNavOutline' || _pAttr === 'gSNavDevelopmentArea' || _pAttr === 'gSNavRecruit') {
				    _rStr = '.png';
			    }
            } else {
			    if(_pAttr === 'gSNavContribution' || _pAttr === 'gSNavIntroduction' || _pAttr === 'gSNavVoice') {
				    _rStr = '.png';
			    }			
			}
		}
		$('<img>').attr('src', _t.clone().attr('src').replace(/(\.gif|\.jpg|\.png)/, '_o' + _rStr));
	});
	
	//set current category active
	gNavImgs.each(function() {
				    if($(this).css('visibility') === 'hidden') {
					    activeId = $(this).parents('li').attr('id'); 
					}
				  });
	gNav.droppy({ speed: 250, activeId : activeId });
	
	if($.browser.msie && $.browser.version < 7) {
        gNav.find('img[src$=.png], a').ifixpng();
	}
	
	//rollover imgs
	$('.imgover').rollover();
});