If you are on Television - Current .. is there a possibility to build in a button for EPG?
Yes
The button is allready there, i did use clicking the picon open the epg for the current channel.
Replace line 4 with this in current.tmpl :
<div style="position:absolute;top:254px;left:212px"><img border='0' width="100px" height="60px" src='$getVar("info.picon", "/images/default_picon.png")' onclick="open_epg_pop('$info.ref');" href="#" title="Show EPG for $info.name $getVar("now.title", " ")" border="0" alt='' /></div>