document.getElementById('a_favorite').onclick = function() { 
	
	//Internet Explorer
	if(navigator.userAgent.indexOf("MSIE") > -1){ 
		window.external.AddFavorite(favorite_url,favorite_title);
	}
	
	//Firefox
	else if(navigator.userAgent.indexOf("Firefox") > -1){ 
		window.sidebar.addPanel(favorite_title,favorite_url,'');
	}
	
	//Opera
	else if(navigator.userAgent.indexOf("Opera") > -1){ 
		this.href 	= favorite_url;
		this.title 	= favorite_title;
		this.rel 	= "sidebar";
		return true;
	}
	
	else {
	}

	return false;
};

document.getElementById('a_yahoo').onclick = function() { 
	
	window.open('http://bookmarks.yahoo.co.jp/bookmarklet/showpopup?t='+encodeURIComponent(favorite_title)+'&u='+encodeURIComponent(favorite_url)+'&ei=UTF-8','_blank','width=650,height=480,left=100,top=50,scrollbars=1,resizable=1',0);

	return false;
};

document.getElementById('a_google').onclick = function() {  
	
	this.href = 'http://toolbar.google.com/buttons/add?url='+favorite_url+'google_button.xml';

	return true;
};