Dynamic Field-names JavaScript/ASP

Help needed!

I'm trying to create a form, where the users specifies the amount of INPUT-fields needed to hold some analyses-results.
Finally the lowest result, the highest result and the average of all the results is supposed to be placed in 3 new INPUT-fields automatically.
The problem is, that the amount varies from one user to the other.
AND ... this is supposed to be done for several different analyses-components.


So far, I have managed to make the first part:

In the Form for one of the components:
<TABLE>
<TR><TD>Amount of analyses-results:</TD>
<TD><INPUT TYPE="text" NAME="abcAmount"></TD>
<TD><INPUT TYPE="button" NAME="button1" VALUE="OK" OnClick="addFields(abcAmount, 'abc')"></TD>
</TR>
</TABLE><BR CLEAR="all">
<SPAN ID="abc" NAME="abc"></SPAN>

The script:
function addFields(amount, mySpan)
{ var place, contents, amo;
amo = amount.value;
place = document.forms.myForm.all(mySpan);
if (amo > 0)
{ contents = "<TABLE>";
for (var i=1; i<=amo; ++i)
{ contents += "<TR><TD>" + i + ". result:</TD><TD><INPUT TYPE='text' NAME='" + mySpan + i + "'></TD></TR>";
}
contents += "</TABLE>;
place.innerHTML = contents;
}
}

The difficult part is to find the lowest and highest result and the average, and get those placed in new INPUT-fields, because the names of the generated INPUT-fields varies depending of the amount of results.

<Script>
var amo = 0;
function addFields(amount, mySpan){
&nbsp;&nbsp;&nbsp;&nbsp;var place, contents;
&nbsp;&nbsp;&nbsp;&nbsp;amo = amount.value;
&nbsp;&nbsp;&nbsp;&nbsp;place = document.forms.myForm.all(mySpan);
&nbsp;&nbsp;&nbsp;&nbsp;if (amo > 0) {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;contents = "<TABLE>";
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for (var i=1; i<=amo; ++i) {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;contents += "<TR><TD>" + i + ". result:</TD><TD><INPUT TYPE='text' NAME='" + mySpan + i + "'></TD></TR>";
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;contents += "</TABLE>";
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;place.innerHTML = contents;
&nbsp;&nbsp;&nbsp;&nbsp;}
}

function analyze() {
&nbsp;&nbsp;&nbsp;&nbsp;var l, h, t, a;
&nbsp;&nbsp;&nbsp;&nbsp;t = 0;
&nbsp;&nbsp;&nbsp;&nbsp;if(amo > 0) {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;l = eval("document.myForm.abc1.value");
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;h = eval("document.myForm.abc1.value");
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for(i=1; i<=amo; i++) {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var val = eval("document.myForm.abc" + i + ".value");
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;val = parseFloat(val);
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(val < l) l = val;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(val > h) h = val;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;t = t + val;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}
&nbsp;&nbsp;&nbsp;&nbsp;}
&nbsp;&nbsp;&nbsp;&nbsp;document.myForm.low.value = l;
&nbsp;&nbsp;&nbsp;&nbsp;document.myForm.high.value = h;
&nbsp;&nbsp;&nbsp;&nbsp;document.myForm.tot.value = t;
&nbsp;&nbsp;&nbsp;&nbsp;document.myForm.ave.value = t/amo;
}
</script>
<form name="myForm">
<TABLE>
<TR><TD>Amount of analyses-results:</TD>
<TD><INPUT TYPE="text" NAME="abcAmount"></TD>
<TD><INPUT TYPE="button" NAME="button1" VALUE="OK" OnClick="addFields(abcAmount, 'abc')"></TD>
</TR>
</TABLE><BR CLEAR="all">
<SPAN ID="abc" NAME="abc"></SPAN>
<table>
<tr><td><input type="button" onclick="analyze()" value="Analyze"></td></tr>
<tr><td>Lowest Result:</td><td><input name="low"></td></tr>
<tr><td>Highest Result:</td><td><input name="high"></td></tr>
<tr><td>Total of Results:</td><td><input name="tot"></td></tr>
<tr><td>Average Result:</td><td><input name="ave"></td></tr>
</table>
</form>