// Devuelve una firma aleatoria


function random (){ 

var v = new Array(
"<a href='http://www.spreadfirefox.com/?q=affiliates&amp;id=129472&amp;t=47' target='_blank'><img border='0' src='http://www.terra.es/personal7/jorgeade/usa_ff.png' title='ˇDescarga Firefox!' alt='ˇDescarga Firefox!'></a>",

"<a href='http://www.spreadfirefox.com/?q=affiliates&amp;id=129472&amp;t=47' target='_blank'><img border='0' src='http://www.terra.es/personal7/jorgeade/mejorcon.gif' title='ˇDescarga Firefox!' alt='ˇDescarga Firefox!'></a>",

"<a href='http://www.spreadfirefox.com/?q=affiliates&amp;id=129472&amp;t=47' target='_blank'><img border='0' src='http://www.terra.es/personal7/jorgeade/firefox.gif' title='ˇDescarga Firefox!' alt='ˇDescarga Firefox!'></a>",

"<a href='http://www.spreadfirefox.com/?q=affiliates&amp;id=129472&amp;t=47' target='_blank'><img border='0' src='http://www.terra.es/personal7/jorgeade/pasate_ff.png' title='ˇDescarga Firefox!' alt='ˇDescarga Firefox!'></a>",

"<a href='http://www.spreadfirefox.com/?q=affiliates&amp;id=129472&amp;t=47' target='_blank'><img border='0' src='http://www.terra.es/personal7/jorgeade/recupera.png' title='ˇDescarga Firefox!' alt='ˇDescarga Firefox!'></a>",

"<a href='http://www.spreadfirefox.com/?q=affiliates&amp;id=129472&amp;t=47' target='_blank'><img border='0' src='http://www.terra.es/personal7/jorgeade/libertad1.gif' title='ˇDescarga Firefox!' alt='ˇDescarga Firefox!'></a>",

"<a href='http://www.spreadfirefox.com/?q=affiliates&amp;id=129472&amp;t=47' target='_blank'><img border='0' src='http://www.terra.es/personal7/jorgeade/fuego2.gif' title='ˇDescarga Firefox!' alt='ˇDescarga Firefox!'></a>",

"<a href='http://www.spreadfirefox.com/?q=affiliates&amp;id=129472&amp;t=47' target='_blank'><img border='0' src='http://www.terra.es/personal7/jorgeade/fmpff02.gif' title='ˇDescarga Firefox!' alt='ˇDescarga Firefox!'></a>"
);


var inf = 0
var sup = v.length

numPosibilidades = sup - inf 

aleat = Math.random() * numPosibilidades 
aleat = Math.floor(aleat) 
    
var num = parseInt(inf) + aleat

return v[num];


} 

