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Appending new HTML elements with JavaScript across framesets

Opera supports W3C DOM-compatible methods for altering documents, such as document.createElement. If these methods are used with framesets, webmasters should note that Opera implements a security restriction that means elements can only be appended to the document they are created within.

For instance, assuming a JavaScript in one frame wants to append OPTION elements to a SELECT in a frame called "menuframe". The following code shows how to call createElement from the document where the new element should be appended:

option = top.menuframe.document.createElement("option");
option.setAttribute("text", "New option");
top.menuframe.document.getElementById("selectMenu").appendChild(option);

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