즐겨찾기 소스좀 알려주세요

function _bookmark() {
var _url = "도메인주소";
var _title = "사이트명";
	if (window.sidebar && window.sidebar.addPanel){ // Firefox 
		window.sidebar.addPanel(_title, _url,"");
	}else if(navigator.userAgent.indexOf("Chrome") > 0 || navigator.userAgent.indexOf("Safari") > 0 ){
		alert("북마크를 하시려면 Ctrl+D를 눌러주세요.");
    }else if (window.external) { // IE 
		window.external.AddFavorite(_url, _title); 
	}else if (window.opera && window.print) {
		window.external.AddFavorite(_url, _title); 
 	}
	else{
		alert("브라우저에서 북마크를 추가해주십시오");
	}

}