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23 lines
683 B
HTML
23 lines
683 B
HTML
<!DOCTYPE html>
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<style>
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p { color: blue; }
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</style>
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<p>Hello</p>
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<script>
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var Cc = Components.classes;
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var Ci = Components.interfaces;
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var sss = Cc["@mozilla.org/content/style-sheet-service;1"]
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.getService(Ci.nsIStyleSheetService);
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var io = Cc["@mozilla.org/network/io-service;1"]
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.getService(Ci.nsIIOService);
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var winUtils = window.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindowUtils);
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function addAgentSheet() {
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var sheetURI = io.newURI("data:text/css,p{background-color:yellow}", null, null);
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var sheet = sss.preloadSheet(sheetURI, Ci.nsIStyleSheetService.AGENT_SHEET);
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winUtils.addSheet(sheet, Ci.nsIDOMWindowUtils.AGENT_SHEET);
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}
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</script>
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