var UserAgent = {
	
	
	
	
	isTouchDevice : function () {
		var ua = navigator.userAgent.toString();
		return (ua.indexOf('iPhone')>-1 || ua.indexOf('iPod')>-1 || ua.indexOf('iPad')>-1);		
		
	}
	
	,isIphoneOS3 : function() {
		var ua = navigator.userAgent.toString();
		return (ua.indexOf('iPhone OS 3_')>-1);
	}
	
	
	
}

//alert('isTouchDevice:' + UserAgent.isTouchDevice())
//alert('isIphoneOS3:' + UserAgent.isIphoneOS3())