ÖRNEK

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function changeCSS(cssFile, cssLinkIndex) { var oldlink = document.getElementsByTagName("link").item(cssLinkIndex); var newlink = document.createElement("link"); newlink.setAttribute("rel", "stylesheet"); newlink.setAttribute("type", "text/css"); newlink.setAttribute("href", cssFile); document.getElementsByTagName("head").item(0).replaceChild(newlink, oldlink);}<html> <head> <title>Changing CSS</title> <link rel="stylesheet" type="text/css" href="positive.css"/> </head> <body> <a href="#" onclick="changeCSS('positive.css', 0);">STYLE 1</a> <a href="#" onclick="changeCSS('negative.css', 0);">STYLE 2</a> </body></html>