Just copy this short line and change the link location and the button description. 

<img><INPUT TYPE="mixx.gif" VALUE="BUTTON DESCRIPTION" onClick="parent.location='LINK LOCATION'"></img>
Reload Button

(This reloads the entire window.)

Just copy this line of code. 
<img><INPUT TYPE="mixx.gif" VALUE="Reload" onClick='parent.location="javascript:location.reload()"'></img>