$(document).ready(function(){
	
	var c = {
		thumbnails:null,
	};
	
	
	
	
	
	function init(){
		// create thumbnails cache
		var list = $("#main .thumbnail");
		
		for(var i=0; i<list.length; i++){
			var $thumb = $(list[i]);
			
			// $thumb要素にプロパティを追加
			$.extend($thumb, {
				date:$thumb.children('.discription').children('ul').children('li.date').html(),
				auth:$thumb.children('.discription').children('ul').children('li.auth_name').html(),
				type:$thumb.children('.discription').children('ul').children('li.type').html()
			});
			$thumb.children('a').children('img').css( { 
				"margin-top": Math.floor((Math.random()*20)/3)*10 +"px", 
				"margin-left": Math.floor((Math.random()*20)/4)*2 +"px"
			});
		}	
		
		c.thumbnails = list;
		
		$(window).resize(function(){
			
			for(var i=0; i<c.thumbnails.length; i++){
				var $thumb = $(c.thumbnails[i]);
				$thumb.children('a').children('img').css( { 
					"margin-top": Math.floor((Math.random()*20)/3)*10 +"px", 
					"margin-left": Math.floor((Math.random()*20)/4)*2 +"px"
				});
			}
		});
	}
	
	//init();
});