var quotes=new Array()

//cambiar las frases

quotes[0]='<iframe src="http://smartad.mercadolibre.com.ar/jm/SmartAd?tool=5884608&creativity=33603&new=N&ovr=N&bgcol=FFFFFF&brdcol=C0C0C0&txtcol=006600&lnkcol=0000FF&hvrcol=FF0000&prccol=FF0000&site=MLA" width="180" height="150" scrolling="no" frameborder="0" marginheight="0" marginwidth="0"></iframe>'

var whichquote=Math.floor(Math.random()*(quotes.length))
document.write(quotes[whichquote])