// ==UserScript==
// @name          Google Blog Search - ja -
// @namespace     http://persistent.info/greasemonkey
// @description	  add search option "japanese page only"
// @include       http://blogsearch.google.com/*

// ==/UserScript==


(function() {
    if (location.href.indexOf("q=") == -1) {
        return;
    }
    var tb = document.getElementsByTagName("tbody");
    var ja = "", all = "";
    if (location.href.indexOf("lr=lang_ja", 0) != -1) {
        ja = " checked";
    } else {
        all = " checked";
    }
    tb[1].innerHTML += '<tr><td colspan=2><font size=-1><input onClick="location.replace(location.href.replace(/&lr=([^&]*)/g, \'\'));" id=stw type=radio name=lr value=""' + all + '><label for=stw>web</label><input onClick="location.replace(location.href.replace(/&lr=([^&]*)/g, \'\') + \'&lr=lang_ja\');" id=lrt type=radio name=lr value=lang_ja' + ja + '><label for=lrt>ja</label></font></td></tr></tbody></table></td></tr></form>';
})();