thanks for the reply ray

i dont quite understand though, as i dont actually use these arrays until after 
the page has loaded and the user clicks something. yet it is actually producing 
the error when the page loads.

if i comment out the text:

<cfoutput>
  var #toScript(array1,'jsArray1')#;
  var #toScript(array2,'jsArray2')#;
</cfoutput>

.... then it doesnt produce the error

thanks




>You need to check the item to see if it's null.
>
><cfset a = arrayNew(1)>
><cfset a[1] = "a">
><cfset a[3] = "c">
>
><cfoutput>
><script>
>var #toScript(a,'data')#
>
>for(var i=0;i < data.length; i++) {
>       if(data[i] != null) alert('pos '+i+' is '+data[i]);
>}
></script>
></cfoutput>
>
>On Fri, Jun 13, 2008 at 8:18 AM, Richard White <[EMAIL PROTECTED]> wrote:
>> 

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