var topologo=new Array()
topologo[0]='<IMG SRC=LSV1.png WIDTH=148 HEIGHT=63 BORDER=0 ALT="Professor Leandro S. Vieira">'
topologo[1]='<IMG SRC=LSV2.png WIDTH=148 HEIGHT=63 BORDER=0 ALT="Professor Leandro S. Vieira">'
topologo[2]='<IMG SRC=LSV3.png WIDTH=148 HEIGHT=63 BORDER=0 ALT="Professor Leandro S. Vieira">'
topologo[3]='<IMG SRC=LSV4.png WIDTH=148 HEIGHT=63 BORDER=0 ALT="Professor Leandro S. Vieira">'
topologo[4]='<IMG SRC=LSV5.png WIDTH=148 HEIGHT=63 BORDER=0 ALT="Professor Leandro S. Vieira">'
topologo[5]='<IMG SRC=LSV6.png WIDTH=148 HEIGHT=63 BORDER=0 ALT="Professor Leandro S. Vieira">'
var whichtopologo=Math.floor(Math.random()*(topologo.length))
document.write(topologo[whichtopologo])