FF: Firefox, N: Netscape, IE: Internet Explorer
| Attribute | The event occurs when... | FF | N | IE |
|---|---|---|---|---|
| onabort | Loading of an image is interrupted | 1 | 3 | 4 |
| onblur | An element loses focus | 1 | 2 | 3 |
| onchange | The content of a field changes | 1 | 2 | 3 |
| onclick | Mouse clicks an object | 1 | 2 | 3 |
| ondblclick | Mouse double-clicks an object | 1 | 4 | 4 |
| onerror | An error occurs when loading a document or an image | 1 | 3 | 4 |
| onfocus | An element gets focus | 1 | 2 | 3 |
| onkeydown | A keyboard key is pressed | 1 | 4 | 3 |
| onkeypress | A keyboard key is pressed or held down | 1 | 4 | 3 |
| onkeyup | A keyboard key is released | 1 | 4 | 3 |
| onload | A page or an image is finished loading | 1 | 2 | 3 |
| onmousedown | A mouse button is pressed | 1 | 4 | 4 |
| onmousemove | The mouse is moved | 1 | 6 | 3 |
| onmouseout | The mouse is moved off an element | 1 | 4 | 4 |
| onmouseover | The mouse is moved over an element | 1 | 2 | 3 |
| onmouseup | A mouse button is released | 1 | 4 | 4 |
| onreset | The reset button is clicked | 1 | 3 | 4 |
| onresize | A window or frame is resized | 1 | 4 | 4 |
| onselect | Text is selected | 1 | 2 | 3 |
| onsubmit | The submit button is clicked | 1 | 2 | 3 |
| onunload | The user exits the page | 1 | 2 | 3 |