var topotwitter=new Array()
topotwitter[0]='<IMG SRC=Twitter1.png ALT="Siga-me no Twitter!" BORDER=0 HEIGHT=32 WIDTH=32>'
topotwitter[1]='<IMG SRC=Twitter2.png ALT="Siga-me no Twitter!" BORDER=0 HEIGHT=32 WIDTH=32>'
topotwitter[2]='<IMG SRC=Twitter3.png ALT="Siga-me no Twitter!" BORDER=0 HEIGHT=32 WIDTH=32>'
var whichtopotwitter=Math.floor(Math.random()*(topotwitter.length))
document.write(topotwitter[whichtopotwitter])