Untitled

<html>
<head>
<script>
function izrac(form) {

      form.rezultat1.value = eval(form.expr.value)
form.rezultat2.value = eval(form.expr.value)
form.rezultat3.value = eval(form.expr.value)


}
</script>
</head>

<body>
<form>
unesite izraz:
<input type="text" NAME="expr" SIZE=15 >
<input type="button" VALUE="izracunaj" ONCLICK="izrac(this.form)">

<br>
Rezultat:
<input type="text" NAME="rezultat1" SIZE=15 >
<br>

<br>
Rezultat:
<input type="text" NAME="rezultat2" SIZE=15 >
<br>

<br>
Rezultat:
<input type="text" NAME="rezultat3" SIZE=15 >
<br>

</form>

</body>
</html>