Hi, Craig!
There is a catch. You should use onmouseover action on initial button, but there should be no onmouseout action - onmouseout action should be attached to rollover button image (i.e. to appearing button). If both events are used on the same button, then flickering will occur (because appearing of rollover button causes onmouseout event on initial button, then again onmouseover when it disappear and again... it becomes cycle).
So finally:
onmouseover - on init button
onmouseout on appearing button
Hi, Craig!
There is a catch. You should use onmouseover action on initial button, but there should be no onmouseout action - onmouseout action should be attached to rollover button image (i.e. to appearing button). If both events are used on the same button, then flickering will occur (because appearing of rollover button causes onmouseout event on initial button, then again onmouseover when it disappear and again... it becomes cycle).
So finally:
onmouseover - on init button
onmouseout on appearing button