Untitled

<HTML>
<HEAD>
<TITLE>Javascript Calculator</TITLE>
<SCRIPT language="javascript" type="text/javascript">
function taglia(){
    a=Number(document.calculator.sen.value);
    b=Number(document.calculator.tor.value);
    c=b-60;
    d=c/5;
    //f = a - (b+12.5);
    g = evalG(a - (b+12.5));

    document.getElementById('totalPrice').innerHTML = parseInt(d)+" "+g;
}

function evalG(f){
    g = "coppa " ;
    c_vect=["AA" , "A" , "B" , "C" , "D" , "DD o E" , "F" , "FF" , "G" "personalizzata, difficilmente reperibile in commercio"];
    for(i = 0; i <= 9 ; i++){
        if(f <= (i * 2.5)){
            g = g + c_vect[i];
            break;
        }
    }
}
</SCRIPT>
</HEAD>
<BODY>
<FORM name="calculator">
Circonferenza Seno: <INPUT type="text" name="sen"> <br>
Circonferenza Sottoseno: <INPUT type="text" name="tor"> <br>
Get Result: <INPUT type="text" name="totalPrice"> <br>
<INPUT type="button" value="Taglia" onclick="javascript:taglia();">
</FORM>
</BODY>
</HTML>