function div_Aleatorio() {
var rango_superior = 32;  
var rango_inferior = 1;  
var valor = Math.floor(Math.random()*(rango_superior-(rango_inferior-1))) + rango_inferior;  
document.write('<td height="355" align="center" valign="bottom" style="background-position: center top; background-repeat:no-repeat;" background="/images/cabezote_'+valor+'.jpg">')
}

function div_Aleatorio2() {
var rango_superior = 6;  
var rango_inferior = 1;  
var valor = Math.floor(Math.random()*(rango_superior-(rango_inferior-1))) + rango_inferior;  
document.write('<td align="center" valign="bottom" style="background-position: center top; background-repeat:no-repeat;" background="/images/misitio/cabezote_'+valor+'.jpg">')
}