Simple Logic but annoying

I got this code from a web site ...it seems easy....The
trouble I am having is : when the page loads it shows 10 record per
page but when I click next link it shows 20 records on the
page...another next will populate 30 records on page...I need 10
records on each navigation...Any help :D
<cfparam name="start" type="numeric" default="1">
<cfparam name="step" type="numeric" default="10">
<cfquery datasource="..." name="queryResults">
select * from table
</cfquery>
<cfif queryResults.recordcount gt 0>
<cfoutput>


<cfif (start-step-step) gt 1>
<a href="#cgi.SCRIPT_NAME#?start=1"><img
src="/images/beginning_blue.png" alt="Beginning"
align="absbottom"></a>
</cfif>
<cfif start gt 1>
<a href="#cgi.SCRIPT_NAME#?start=#start-step#"><img
src="/images/previous_blue.png" alt="Previous"
align="absbottom"></a>
</cfif>
#start# - #iif(start + step gt
queryResults.recordcount,queryResults.recordcount,start + step-1)#
of #queryResults.recordcount# records

<cfif (start + step) lte queryResults.recordcount>
<a href="#cgi.SCRIPT_NAME#?start=#start+step#"><img
src="/images/next_blue.png" alt="Next"
align="absbottom"></a>
</cfif>
<cfif (start+step+step) lte queryResults.recordcount>
<a
href="#cgi.SCRIPT_NAME#?start=#queryResults.recordcount-step+1#"><img
src="/images/end_blue.png" alt="End"
align="absbottom"></a>
</cfif>

</cfoutput>
</cfif>
<cfloop query="queryResults" startrow="#start#"
maxrow="#start + step-1#">
...... output query here
</cfloop>

There is an example that does just this in the CF help
look-up cfquery / example
I've posted the example below
Example



<cfparam name="MaxRows" default="10">
<cfparam name="StartRow" default="1">

<cfquery
name="GetParks" datasource="cfdocexamples"
cachedwithin="#CreateTimeSpan(0, 6, 0, 0)#">
SELECT PARKNAME, REGION, STATE
FROM Parks
ORDER BY ParkName, State
</cfquery>

<table cellpadding="1" cellspacing="1">
<tr>
<td bgcolor="f0f0f0">
</td>
<td bgcolor="f0f0f0">
Park Name
</td>
<td bgcolor="f0f0f0">
Region
</td>
<td bgcolor="f0f0f0">
State
</td>
</tr>

<cfoutput query="GetParks" startrow="#StartRow#"
maxrows="#MaxRows#">
<tr>
<td valign="top" bgcolor="ffffed">
#GetParks.CurrentRow#
</td>
<td valign="top">
#ParkName#
</td>
<td valign="top">
#Region#
</td>
<td valign="top">
#State#
</td>
</tr>
</cfoutput>

<tr>
<td colspan="4">
<cfif (StartRow + MaxRows) LTE GetParks.RecordCount>
<cfoutput><a
href="#CGI.SCRIPT_NAME#?startrow=#Evaluate(StartRow +
MaxRows)#">
See next #MaxRows# rows</a></cfoutput>
</cfif>
</td>
</tr>
</table>

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out ..
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PO_NUM
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2 /
PO_NO
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L00041677
L43677000
L00043677
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6 /
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5 /
1 row deleted.
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2 /
PO_NO
L53177000
L41677000
L43677000
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