JS and names in HTML

[hpl]

How do I refer to a text field created like this?

<script language="JavaScript"><!--
for (i=1;i<11;i++){
document.write('   <td><input type=text name=t' + i + 'value=100></td>');
	}
//--></script>

I have tried to use this
var testing = formName.test.t2.value;
does it not create 10 text fields with the names T1, T2 ... T10? Because that is how I want it to be.