Abstract: An air conditioner includes a heat exchanger for exchanging heat with air brought into a housing, and a blower fan for blowing air that has exchanged heat with the heat exchanger out of the housing, and controls a guide unit that opens or closes part of an outlet provided in the housing to blow out various flows of air.

Abstract: An air conditioner includes a heat exchanger for exchanging heat with air brought into a housing, and a blower fan for blowing air that has exchanged heat with the heat exchanger out of the housing, and controls a guide unit that opens or closes part of an outlet provided in the housing to blow out various flows of air.

Abstract: Provided are an apparatus and method for extracting cascading style sheet (CSS) rules. The apparatus includes a generation unit configured to generate an identification list that includes identification symbols that correspond to one or more selectors, for each document object model (DOM) node. The apparatus also includes a rule extraction unit configured to select a target DOM node and extract one or more CSS rules that are applicable to the target DOM node based on identification symbols that are included in an identification list that corresponds to the target DOM node.

Abstract: Provided are an apparatus and method for extracting cascading style sheet (CSS) rules. The apparatus includes a generation unit configured to generate an identification list that includes identification symbols that correspond to one or more selectors, for each document object model (DOM) node. The apparatus also includes a rule extraction unit configured to select a target DOM node and extract one or more CSS rules that are applicable to the target DOM node based on identification symbols that are included in an identification list that corresponds to the target DOM node.

Abstract: A method of providing a web-based e-mail service is disclosed, in which a user can conveniently check and manage e-mail messages. The method of providing a web-based e-mail service on a web site to a user having an e-mail account, the method includes the steps of: displaying basic information of each of incoming/outgoing e-mail messages in a predetermined frame of the web site when the user accesses the web site to check the e-mail messages; selecting a desired e-mail message by the user; displaying detailed information of the desired e-mail message in an incoming message displaying frame if the selected message is an incoming message; and displaying detailed information of the desired e-mail message in an outgoing message displaying frame if the selected message is an outgoing message.