suamr text input
hola, tengo este scrpit y no me funciona si lo inserto dentro de un FORM
<input type="text" name="sumando1" onChange="Sumar()" value="0">
<input type="text" name="sumando2" onChange="Sumar()" value="0">
<input type="text" name="total" >
<script language=javascript>
function Sumar()
{
var n1 = new Number(sumando1.value) ;
var n2 = new Number(sumando2.value) ;
total.value= n1 + n2;
}
</script>
<input type="text" name="sumando1" onChange="Sumar()" value="0">
<input type="text" name="sumando2" onChange="Sumar()" value="0">
<input type="text" name="total" >
<script language=javascript>
function Sumar()
{
var n1 = new Number(sumando1.value) ;
var n2 = new Number(sumando2.value) ;
total.value= n1 + n2;
}
</script>