CODIGO HTML:
<form method=»post» action=»» name=»»>
<select name=»select15″ onChange=»window.open(this.options[this.selectedIndex].value,’ _blank ‘)»>
<OPTION VALUE=»http://www.tuweb.com/» SELECTED>Leer el periodico
<OPTION VALUE=»http://www.meneame.net/»>Meneame
<OPTION VALUE=»http://www.elcorreo.com/»>El Correo Digital
</select>
</form>