[compatibilita Js]

[Reale_Augello]

... così:

function res(){ 
var miaform=window.document.forms[0]; 
var c1=miaform.Select1; 
var c2=miaform.Select2; 
var c3=miaform.Select3; 
c1.selectedIndex = 0; 
c2.selectedIndex = 0; 
c3.selectedIndex = 0; 
}

Fammi sapere !