(function(a){a.fn.extend({scrollable:function(d,c,b){return this.each(function(){if(typeof d=="string"){var e=a.data(this,"scrollable");
e[d].apply(e,[c,b])
}else{new a.scrollable(this,d,c)
}})
}});
a.scrollable=function(b,c){a.data(b,"scrollable",this);
this.init(b,c)
};
a.extend(a.scrollable.prototype,{init:function(f,d){var c=this;
var g={size:5,horizontal:false,activeClass:"active",speed:300,onSeek:null,items:".items",prev:".prev",next:".next",navi:".navi",naviItem:"span"};
this.opts=a.extend(g,d);
var b=this.root=a(f);
var e=a(g.items,b);
if(!e.length){e=b
}e.css({position:"relative",overflow:"hidden",visibility:"visible"});
e.children().wrapAll('<div class="__scrollable" style="position:absolute"/>');
this.wrap=e.children(":first");
this.wrap.css(g.horizontal?"width":"height","200000em").after('<br clear="all"/>');
this.items=this.wrap.children();
this.index=0;
if(g.horizontal){e.width(g.size*(this.items.eq(1).offset().left-this.items.eq(0).offset().left)-2)
}else{e.height(g.size*(this.items.eq(1).offset().top-this.items.eq(0).offset().top)-2)
}if(a.isFunction(a.fn.mousewheel)){b.bind("mousewheel.scrollable",function(h,i){c.move(-i,50);
return false
})
}a(window).bind("keypress.scrollable",function(h){if(a(h.target).parents(".__scrollable").length){if(g.horizontal&&(h.keyCode==37||h.keyCode==39)){c.move(h.keyCode==37?-1:1);
return false
}if(!g.horizontal&&(h.keyCode==38||h.keyCode==40)){c.move(h.keyCode==38?-1:1);
return false
}}return true
});
this.items.each(function(i,h){a(this).bind("click.scrollable",function(){c.click(i)
})
});
this.activeIndex=0;
a(g.prev,b).click(function(){c.prev()
});
a(g.next,b).click(function(){c.next()
});
a(g.navi,b).each(function(){var l=a(this);
var h=c.getStatus();
if(l.is(":empty")){for(var j=0;
j<h.pages;
j++){var k=a("<"+g.naviItem+"/>").attr("page",j).click(function(){var i=a(this);
i.parent().children().removeClass(g.activeClass);
i.addClass(g.activeClass);
c.setPage(i.attr("page"))
});
if(j==0){k.addClass(g.activeClass)
}l.append(k)
}}else{l.children().each(function(m){var n=a(this);
n.attr("page",m);
if(m==0){n.addClass(g.activeClass)
}n.click(function(){n.parent().children().removeClass(g.activeClass);
n.addClass(g.activeClass);
c.setPage(n.attr("page"))
})
})
}})
},click:function(c){var e=this.items.eq(c);
var b=this.opts.activeClass;
if(!e.hasClass(b)&&(c>=0||c<this.items.size())){var d=this.items.eq(this.activeIndex).removeClass(b);
e.addClass(b);
this.seekTo(c-Math.floor(this.opts.size/2));
this.activeIndex=c
}},getStatus:function(){var b=this.items.size();
var c={length:b,index:this.index,size:this.opts.size,pages:Math.round(b/this.opts.size),page:Math.round(this.index/this.opts.size)};
return c
},seekTo:function(c,i){if(c<0){c=0
}c=Math.min(c,this.items.length-this.opts.size);
var e=this.items.eq(c);
if(e.size()==0){return false
}this.index=c;
if(this.opts.horizontal){var h=this.wrap.offset().left-e.offset().left;
this.wrap.animate({left:h},i||this.opts.speed)
}else{var g=this.wrap.offset().top-e.offset().top;
this.wrap.animate({top:g},i||this.opts.speed)
}if(a.isFunction(this.opts.onSeek)){this.opts.onSeek.call(this.getStatus())
}var d=a(this.opts.navi,this.root);
if(d.length){var b=this.opts.activeClass;
var f=Math.round(c/this.opts.size);
d.children().removeClass(b).eq(f).addClass(b)
}return true
},move:function(c,b){this.seekTo(this.index+c,b)
},next:function(b){this.move(3,b)
},prev:function(b){this.move(-3,b)
},movePage:function(c,b){this.move(this.opts.size*c,b)
},setPage:function(b,c){this.seekTo(this.opts.size*b,c)
},begin:function(b){this.seekTo(0,b)
},end:function(b){this.seekTo(this.items.size()-this.opts.size,b)
}})
})(jQuery);