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See mouse over.

mouse over

(1) To move the mouse pointer over an object on screen such as an icon, hyperlink or menu and hold it there. If the pointer hovers over a link, the pointer changes its shape to alert the user. See definition #2 below and hypertext.

(2) (mouseover) A JavaScript instruction that tests the current position of the mouse. It is used to change the appearance of a button that has been selected. Two buttons are created by the developer: one in the normal state; the other altered to alert the user that it has been selected. In the early days of personal computers, it used to simulate the depression of a physical button but has since evolved to mostly a color change. The JavaScript statement that starts with the code "on mouseover" displays the altered image. See button.

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