Código PHP:
<script language="javascript">
function abrir2Ventanas()
{
window.open("06_Inventario_actuallist.asp","prueba1", "width=385,height=180,top=0,left=0',status,toolbar =1,scrollbars,location");
window.open("leftmenu.htm","prueba2","width=385,he ight=180,top=0,left=395,status,toolbar=1,scrollbar s,location");
}
</script>
<a href="" onClick="abrir2Ventanas();">KK</a>
<input type="button" name="Submit" value="Enviar" onClick="abrir2Ventanas();">
de cualquier manera me funciona :)