[thelist] prev and next

[Kevin Raleigh]

I have a partial completed script for the prev and next buttons using a
framed web page
The nav contains the controls and directs them into the body of the web
page.

Problem is, that I haven't been able to figure out how to place the upper
and lower limits
in the script.

Can you take a look and tell me how to place the upper and lower limits so
that when the user reaches
the last page the button is hidden instead of the user loading a page giving
a 404.

Thank You
Kevin

The Code:
<SCRIPT LANGUAGE="JavaScript">
<!--

var thepages=new Array()
thepages[0]="ImageMapFolders/1-24/imagemap1.html"
thepages[1]="ImageMapFolders/25_48/imagemap2.html"
thepages[2]="ImageMapFolders/49_72/imagemap3.html"
thepages[3]="ImageMapFolders/73_96/imagemap4.html"
thepages[4]="ImageMapFolders/97_/imagemap5.html"
//etc


var ind=1
 function next(){
 if(ind<thepages.length){
 top.main.location=thepages[ind+1]
 ind++
  }
}

function prev(){
 if(ind>0){
 top.main.location=thepages[ind-1]
 ind--
 }
}



//-->
</SCRIPT>

<a href="javascript:void(0);" onClick="prev();">prev</a>

<a href="javascript:void(0);" onClick="next();">next</a>