end of file error

Hi, can anyone help me on this one?

I have a search page that send to the results page by using a form.

the search page looks something like this:

<form name="form[FMP-currentrecid]" action="FMPro?" method="Post">

<input type="hidden" name="-db" value="-db1">

<input type="hidden" name="-lay" value="web">

<input type="hidden" name="-format" value="b_rslts.html">

<input type="hidden" name="-token.1" value="[FMP-currenttoken:1]">

<input type="hidden" name="-token.2" value="[FMP-currenttoken:2]">

<input type="hidden" name="-token.3" value="[FMP-currenttoken:3]">

<input type="hidden" name="-token.4" value="[FMP-currenttoken:4]">

<input type="hidden" name="-token.5" value="[FMP-currentrecid]">

<input type="hidden" name="-op" value="eq">

<input type="hidden" name="Model" value="[FMP-field:modkey]">

<input type="hidden" name="-error" value="s_err.html">

<input type="hidden" name="-sortfield" value="misc">

<input type="hidden" name="-sortorder" value="Ascending">

<input type="hidden" name="image status" value="Online">

<input type="hidden" name="-Max" value="3">

<input type="hidden" name="-find">

</form>

The first three results are returned fine.

When you go to the next three results it brings up and error of

unexpected end of file...

Having looked at the URL in the address bar - if I remove an = that has been put after the -find the query works, likewise if I delete a few of the search criteria.

Is there a maximum length url that the browsers can handle?

the url is included.

http://www.mywebsite.com/vxn/FMPro?-db=vxnmedia&-format=b%5frslts.html&-lay=web&-sortfield=misc&-op=eq&Model=New%20Vectra%20Club%202002%20Edition%201&image%20status=Online&-max=3&-skip=6&-token.1=00071&-token.2=X&-token.3=33372&-token.4=C&-token.5=32890&-find=

The problem is worse on the PC than it is on the Mac

Any ideas???

I haven't got any hair left to pull out!