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# The MathEvents extension

The options below control the operation of the MathEvents component that allows handles mouse and menu events attached to mathematics that is typeset by MathJax. They are listed with their default values. To set any of these options, include a `MathEvents` section in your `MathJax.Hub.Config()` call. For example

    MathJax.Hub.Config({
      MathEvents: {
        hover: 400
      }
    });

would set the required delay for hovering over a math element to 400 milliseconds.

`hover: 500`

  This value is the time (in milliseconds) that a user must hold the mouse still over a math element before it is considered to be hovering over the math.

`styles: {}`

  This is a list of CSS declarations for styling the zoomed mathematics. See the definitions in `extensions/MathEvents.js` for details of what are defined by default. See CSS Style Objects for details on how to specify CSS style in a JavaScript object.

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