// JavaScript Document
/*
* 2010.05.14
*從服務器獲取圖片
*
*/

$(document).ready(function(){
						   $('ul.gallery').galleria();
	$('#type').change( function (){
         $.ajax({
         url: 'ajaxload.php',
         cache: false,
         dataType: 'html',
             type:'POST',
         data: { selectclass: $('#type').val()},
         error: function(xhr) {
           alert('Ajax request 發生錯誤');
         },
         success: function(response) {
                   $('ul.gallery_demo').html(response); 
				   $('#main_image').empty(); /*bug chang 時無法顯示第一張圖片*/
				   //$('ul.gallery').galleria(); 
				   //$.galleria.current = '';
				 //$('ul.gallery_demo').fadeIn();
         }
     });
		 $('#thumb_zone').hide(); 
				   $('#show_zone').hide(); 
 }).change();
	
	$("#loadingImg").ajaxStart(function(){
	   $(this).show();
	});
	$("#loadingImg").ajaxStop(function(){
	   $(this).hide();
	    $('#thumb_zone').show(); 
		$('#show_zone').show(); 
	   $('ul.gallery_demo').galleria({
		history   : false, // activates the history object for bookmarking, back-button etc.
		clickNext : true, // helper for making the image clickable
		insert    : '#main_image', // the containing selector for our main image
		onImage   : function(image,caption,thumb) { // let's add some image effects for demonstration purposes
			
			// fade in the image & caption
			image.css('display','none').fadeIn(1000);
			caption.css('display','none').fadeIn(1000);
			
			// fetch the thumbnail container
			var _li = thumb.parents('li');
			
			// fade out inactive thumbnail
			_li.siblings().children('img.selected').fadeTo(500,0.3);
			
			// fade in active thumbnail
			thumb.fadeTo('fast',1).addClass('selected');
			
			// add a title for the clickable image
			image.attr('title','下一張 >>');
		},
		onThumb : function(thumb) { // thumbnail effects goes here
			
			// fetch the thumbnail container
			var _li = thumb.parents('li');
			
			// if thumbnail is active, fade all the way.
			var _fadeTo = _li.is('.active') ? '1' : '0.3';
			
			// fade in the thumbnail when finnished loading
			thumb.css({display:'none',opacity:_fadeTo}).fadeIn(1500);
			
			// hover effects
			thumb.hover(
				function() { thumb.fadeTo('fast',1); },
				function() { _li.not('.active').children('img').fadeTo('fast',0.3); } // don't fade out if the parent is active
			)
		}
	});
	});	
});