/*详情页图片放大镜*/
(function ($) {
    $.fn.imagezoom = function (options) {
        var settings = {
            xzoom: 210,
            yzoom: 140,
            offset: 10,
            position: "btr",
            preload: 1
        };
        if (options) {
            $.extend(settings, options);
        }

        var noalt = '';
        var self = this;

        $(this).bind("mouseenter", function (ev) {
            var imageleft = $(this).offset().left; //元素左边距
            var imagetop = $(this).offset().top; //元素顶边距
            var imagewidth = $(this).get(0).offsetwidth; //图片宽度
            var imageheight = $(this).get(0).offsetheight; //图片高度
            var boxleft = $(this).parent().offset().left; //父框左边距
            var boxtop = $(this).parent().offset().top; //父框顶边距
            var boxwidth = $(this).parent().width(); //父框宽度
            var boxheight = $(this).parent().height(); //父框高度
            noalt = $(this).attr("alt"); //图片标题
            var bigimage = $(this).attr("rel"); //大图地址
            $(this).attr("alt", ''); //清空图片alt
            if ($("div.zoomdiv").get().length == 0) {
                $(document.body).append("<div class='zoomdiv'><img class='bigimg' src='" + bigimage + "'/></div><div class='zoommask'><a href='javascript:;' style='display:block;width:100%;height:100%;'></a></div>"); //放大镜框及遮罩
            }
            if (settings.position == "btr") {
                //如果超过了屏幕宽度 将放大镜放在右边
                if (boxleft + boxwidth + settings.offset + settings.xzoom > screen.width) {
                    leftpos = boxleft - settings.offset - settings.xzoom;
                } else {
                    leftpos = boxleft + boxwidth + settings.offset;
                }
            } else {
                leftpos = imageleft - settings.xzoom - settings.offset;
                if (leftpos < 0) {
                    leftpos = imageleft + imagewidth + settings.offset;
                }
            }
            $("div.zoomdiv").css({ top: boxtop, left: leftpos });
            $("div.zoomdiv").width(settings.xzoom);
            $("div.zoomdiv").height(settings.yzoom);
            $("div.zoomdiv").show();

            $(this).css('cursor', 'crosshair');

            $(document.body).mousemove(function (e) {
                mouse = new mouseevent(e);
                if (mouse.x < imageleft || mouse.x > imageleft + imagewidth || mouse.y < imagetop || mouse.y > imagetop + imageheight) {
                    mouseoutimage();
                    return;
                }

                var bigwidth = $(".bigimg").get(0).offsetwidth;
                var bigheight = $(".bigimg").get(0).offsetheight;

                var scaley = 'x';
                var scalex = 'y';

                //设置遮罩层尺寸
                if (isnan(scalex) | isnan(scaley)) {
                    var scalex = (bigwidth / imagewidth);
                    var scaley = (bigheight / imageheight);
                    $("div.zoommask").width((settings.xzoom) / scalex);
                    $("div.zoommask").height((settings.yzoom) / scaley);
                    $("div.zoommask").css('visibility', 'visible');
                }

                xpos = mouse.x - $("div.zoommask").width() / 2;
                ypos = mouse.y - $("div.zoommask").height() / 2;

                xposs = mouse.x - $("div.zoommask").width() / 2 - imageleft;
                yposs = mouse.y - $("div.zoommask").height() / 2 - imagetop;

                xpos = (mouse.x - $("div.zoommask").width() / 2 < imageleft) ? imageleft : (mouse.x + $("div.zoommask").width() / 2 > imagewidth + imageleft) ? (imagewidth + imageleft - $("div.zoommask").width()) : xpos;
                ypos = (mouse.y - $("div.zoommask").height() / 2 < imagetop) ? imagetop : (mouse.y + $("div.zoommask").height() / 2 > imageheight + imagetop) ? (imageheight + imagetop - $("div.zoommask").height()) : ypos;


                $("div.zoommask").css({ top: ypos, left: xpos });
                $("div.zoomdiv").get(0).scrollleft = xposs * scalex;
                $("div.zoomdiv").get(0).scrolltop = yposs * scaley;
            });
        });
        function mouseoutimage() {
            $(self).attr("alt", noalt);
            $(document.body).unbind("mousemove");
            $("div.zoommask").remove();
            $("div.zoomdiv").remove();
        }

        //预加载
        count = 0;
        if (settings.preload) {
            $('body').append("<div style='display:none;' class='jqpreload" + count + "'></div>");

            $(this).each(function () {

                var imagetopreload = $(this).attr("rel");

                var content = jquery('div.jqpreload' + count + '').html();

                jquery('div.jqpreload' + count + '').html(content + '<img src=\"' + imagetopreload + '\">');

            });
        }
    }

})(jquery);
function mouseevent(e) {
    this.x = e.pagex;
    this.y = e.pagey;
}

//以下代码实现小图左右的移动效果
ph$ = {
	bindevt : function() {
		var o = {};
		o.btn_sell_l = $("#pageleft");
		if (o.btn_sell_l.length > 0) {
			o.btn_sell_l.bind("click", function() {
				ph$.scrolllvesell('right');
			});
		}
		o.btn_sell_r = $("#pageright");
		if (o.btn_sell_r.length > 0) {
			o.btn_sell_r.bind("click", function() {
				ph$.scrolllvesell('left');
			});
		}

	},
	scrolllvesell : function(o) {
		if (this.cfg.lv_flag == 0)
			return false;
		var tar = $("#sell_order");
		var tar2 = $("#sell_order_t");
		tar.stop();
		tar2.stop();
		var max_num = $("#sell_order>li").length;
		var width = 128; //每次移动的大小,包含内边距和外边距
		var left = 0;
		var pos = tar.position();
		//alert(pos.left + "|" + width);
		if (o == "left") {
			if (math.abs(pos.left)+width > width*(max_num-3)) {
				return false;
			}
			left = pos.left - width;
		} else if (o == "right") {
			if (pos.left >= 0) {
				return false;
			}
			left = pos.left + width;
		}
		left = left + "px";
		//alert(left);
		ph$.cfg.lv_flag = 0;
		tar.animate({
			left: left
		}, 330);
		tar2.animate({
			left: left
		}, 330, function() {
			ph$.cfg.lv_flag = 1;
			//alert(pos.left);
		});
	},
	cfg : {

	},
	init : function() {
		this.bindevt();
	}
};
$(function($) {
	ph$.init();
//****点击小图展示大图和内容 begin***
//小于4时不显示左右的箭头
var num=$("#sell_order li").length
if(num<4){
	$("#pageleft").css("display","none")
	$("#pageright").css("display","none")
	}
	else{
		$("#pageleft").css("display","block")
	   $("#pageright").css("display","block")
		}
		
var firstbig=$(".sell_order li:first img").attr("datasrc");
var firstsmall=$(".sell_order li:first img").attr("rel");

$(".big_pic img").attr("src",firstbig)
$(".small_pic img").attr("src",firstsmall)
$(".sell_order li:first").addclass("hover")
$(".sell_order li").hover(function(){
  var imgbig=$(this).find("img").attr("big");
  var imgsmall=$(this).find("img").attr("mid")
  $(".bigpic img").attr("rel",imgbig)
  $(".bigpic img").attr("src",imgsmall)
 
  $(".sell_order li").removeclass("hover")
  $(this).addclass("hover")
  
  var bigpicurl=$(this).find("img").attr("big")
  $("#chakan").attr("href",bigpicurl)
});
//****点击小图展示大图和内容 end***		
});
  
$(function($) {
	var bigpicurl=$(".sell_order li[class='hover']").find("img").attr("big")
	$("#chakan").attr("href",bigpicurl)
	$(".jqzoom").imagezoom();
})