Well it most def aint PhP, I looked at their source and it looked like Javascripts to me. This CAN be done in PHP too dont get me wrong, by why go through the hasel?
This is what I saw in example fo Javascript that theyve used below:
<AREA SHAPE="rect" COORDS="2,2148,21,2168" ONCLICK="parent.document.smiley.smileytext.value=parent.document.smiley.smileytext.value+'<font sml="AgHSJnQ="> :-D</font> '" TARGET="" ALT="" />
<AREA SHAPE="rect" COORDS="21,2148,40,2168" ONCLICK="parent.document.smiley.smileytext.value=parent.document.smiley.smileytext.value+'<font sml="AgHSJnQ="> =-O</font> '" TARGET="" ALT="" />
<AREA SHAPE="rect" COORDS="40,2148,59,2168" ONCLICK="parent.document.smiley.smileytext.value=parent.document.smiley.smileytext.value+'<font sml="AgHSJnQ=">:-'+String.fromCharCode(42)+'</font>'" TARGET="" ALT="" />
<AREA SHAPE="rect" COORDS="59,2148,78,2168" ONCLICK="parent.document.smiley.smileytext.value=parent.document.smiley.smileytext.value+'<font sml="AgHSJnQ="> '+String.fromCharCode(62)+':o</font> '" TARGET="" ALT="" />
<AREA SHAPE="rect" COORDS="78,2148,97,2168" ONCLICK="parent.document.smiley.smileytext.value=parent.document.smiley.smileytext.value+'<font sml="AgHSJnQ="> 8-)</font> '" TARGET="" ALT="" />
<AREA SHAPE="rect" COORDS="97,2148,116,2168" ONCLICK="parent.document.smiley.smileytext.value=parent.document.smiley.smileytext.value+'<font sml="AgHSJnQ=">:-$</font>'" TARGET="" ALT="" />
<COUGH> That was alot I squeezed out, ouch!:eek::o