Alternative to tool tip

I created a form in LifeCycle Designer 8. The pilot group commented that the tool tips are difficult to read - if the cursor slips down the screen, the tool tip for whatever field the cursor happens to be on appears. This caused some confusion. I created buttons and added app.alert script to them. The button only has a ? as the text without any background. This appears to work well except for all the ???? throughout the form that kind of blend in (even though they are a different color) I would like to have a picture instead of the question mark but cannot seem to add the same script to an image field as all the events are greyed out.