Cursor movement not working in Netscape

It is working in IE

[ksvijay]

Thecode below is not working in Netscape7.2 & a7.0

In IE the cursor is going for the field which has no tabindex,
But in NS7.0 the cursor is going to all fields,

I want the cusror should not go to the fields which has tabindex="-1" in IE and Netscape.

Pls help me

<input type="text" name="text1" maxlength="50" value="1111" > <br>
<input type="text" name="text2" maxlength="50" value="9999" readonly="true" tabindex="-1" > <br>
<input type="text" name="text3" maxlength="50" value="8888" readonly="true" tabindex="-1" > <br>
<input type="text" name="text4" maxlength="50" value="2222" ><br>
<input type="text" name="text5" maxlength="50" value="7777" readonly="true" tabindex="-1" > <br>

[Rambo Tribble]

The use of a negative number to remove the element from the tabbing order is IE-only. Try the disabled property.