Mouseover Show popups - Oracle Forms 10g

I have created a stacked canvas in Oracle Forms 10g.Also I have 2 buttons that on click perform show or hide functions on the stacked canvas.The stacked canvas is placed on top of a content canvas.

Now I plan to implement the same function on mouseover. How can I achieve the same.I would be using a number of icons in the content canvas.On mouse over on the icons a popup window will open that wil开发者_高级运维l have the contents of individual stacked canvas

You can add a WHEN-MOUSE-ENTER or a WHEN-MOUSE-LEAVE trigger for each of the icons and include a show_canvas() call to show the stacked canvas