function msn(person,screen) {

		// check msn messenger
		try {
			MsgrObj.classid="clsid:B69003B3-C55E-4B48-836C-BC5946FC3B28";
		} catch(e) {
			if(!(e.number && 2148139390) == 2148139390) {
				alert( "msn messenger°¡ ¾øÀ¸½Ã³×¿ä-.-" );
				return;
			}
		}

		// check login status
		if( MsgrObj.MyStatus == 1 ) {
			alert( "¸Þ½ÅÀú¿¡ ·Î±äÇϼ¼¿ë^^" );
			return;
		}

		// check person in contant list
		try {
			var contact = MsgrObj.GetContact(person,"");
		} catch(e) {
			if((e.number && 2164261642) == 2164261642) { //MSGR_E_USER_NOT_FOUND 
				if( confirm( "Àú¶û ¾ê±â ÇϽǷ¡¿ä?^^ "+screen+"À» ´ëÈ­»ó´ë¿¡ Ãß°¡ÇÕ´Ï´Ù." ) ) {
					MsgrObj.AddContact(0,person);
				}
			}
		}

		MsgrObj.InstantMessage(person);
	}