Is it possible to make something like this:
Code
<plugin name="facebook"
url="facebook_logo.png"
align="rightbottom"
onhover="showtext(Add this to Facebook);"
onclick="openurl('http://www.facebook.com/sharer.php?u='+location.href+'&t='+document.title);"
x="10"
y="10"
/>
That's not obviously working, but that's the idea: Opening the current URL so you could add that to Facebook etc. Can I call my own Javascript commands or use some variables that I pass via the SFW call etc?