//追随メニュー
//http://www.skuare.net/2009/04/jquerylive_floating_menu.html

var name = "#side_to_blog";
var menuYloc = null;
$(document).ready(function(){
menuYloc = parseInt($(name).css("top").substring(0,$(name).css("top").indexOf("px")))
$(window).scroll(function () {
offset = menuYloc+$(document).scrollTop()+"px";
$(name).animate({top:offset},{duration:500,queue:false});
});
});