| 摘要 |
According to an embodiment of the present invention, the present invention includes: providing advertisement providing condition information which is previously set and receiving advertisement providing request information corresponding to the advertisement providing condition information; calculating an advertisement providing rate for the multiple web sites using the advertisement providing condition information and the advertisement providing request information; and transmitting advertisement data to the client in accordance with the advertisement providing rate when the advertisement data transmitting request is received from the client. The advertisement data transmitting request that is received from the client is performed in such a manner that the client receives a web document provided from the web server to determine whether a scroll bar is located in location information included in a tag included in the web document, and requests the advertisement server to transmit the advertisement data when the scroll bar is located in the location information included in the tag. According to the present invention, if multiple advertisers transmit advertisement providing requests, the advertisers' advertisements can be provided to various web sites or web pages and the like, while the advertisers' advertisement providing requirements are reflected thereupon. In addition, as online advertisements using the location information of scroll bars are provided, advertisers who provide the advertisements can be accurately charged for the advertisements according to the degree of advertisement exposure to users.
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