function OpenBooknarkDialog(site_url, site_name) {
    if(navigator.userAgent.indexOf("MSIE") > -1){ //＃ IE
        window.external.AddFavorite(site_url, site_name);
        return true;
        
    } else if(navigator.userAgent.indexOf("Firefox") > -1){ //＃ Firefox
        window.sidebar.addPanel(site_name, site_url, "");
        return true;
        
    } else if(navigator.userAgent.indexOf("Chrome") > -1){ //＃ Chrome
      //  window.sidebar.addPanel(site_name, site_url, "");
		var a=window,b=document,c=encodeURIComponent,d=a.open("http://www.google.com/bookmarks/mark?op=edit&output=popup&bkmk="+c(b.location)+"&title="+c(b.title),"bkmk_popup","left="+((a.screenX||a.screenLeft)+10)+",top="+((a.screenY||a.screenTop)+10)+",height=420px,width=550px,resizable=1,alwaysRaised=1");
		a.setTimeout(function(){d.focus()},300);
        return true;
        
    } else if(navigator.userAgent.indexOf("Safari") > -1){ //＃ Safari
        alert("[ctrl]+[D]キーの同時押しで登録してください");
        return true;        
    } else { //# 該当なし
        return false;
    }
}