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Fahrner Image Replacement (abbreviated FIR) is a Web design technique that uses Cascading Style Sheets to replace text on a Web page with an image containing that text. It is intended to keep the page accessible to users of screen readers, text-only web browsers, or other browsers where support for images or style sheets is either disabled or nonexistent, while allowing the image to differ between styles. FIR is named for Todd Fahrner, one of the persons originally credited with the idea of image replacement.〔 〕 == Motivation == The typical method of inserting an image in an HTML document is via the <img> tag. This method has its drawbacks with regards to accessibility and flexibility, however:* While the alt attribute is designed for providing a textual representation of the image content, this precludes the use of HTML markup in the textual representation and causes problems with some search robots.* Using the <img> tag to show text is presentational; many Web designers argue that presentational elements should be separated from HTML content by placing the former in a CSS style sheet.* Images referenced using an <img> tag cannot be easily changed via CSS, causing problems with alternative stylesheets.Fahrner Image Replacement was devised to rectify these issues. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fahrner Image Replacement」の詳細全文を読む スポンサード リンク
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