En su html generado aparece ésto:
Cita: <div style="padding-top: 130px;">
<div align="center">
<img height="100" width="250" onmouseout="this.src='boton1bn.jpg'" onmouseover="this.src='boton1.jpg'" src="boton1.jpg">
<img height="100" width="250" onmouseout="this.src='boton2bn.jpg'" onmouseover="this.src='boton2.jpg'" src="boton2bn.jpg">
<img height="100" width="250" onmouseout="this.src='boton3bn.jpg'" onmouseover="this.src='boton3.jpg'" src="boton3bn.jpg"></div>
</div>
De dónde procede, eso ya no lo se.