Plotting values from Excel file on Google map

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Hi,
I am working on a code and having some problems in it.
I am developing a code,which takes values from excel file as lattitude and longitude and place it on map as a marker.
The problem we are encountering is that only first two cells(means lattitude and longitude for one marker) are plotted.
I need to place several markers at the positios mentioned in the excel sheet.
The code is attached here.

HTML

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml"> 
  <head> 
    <meta http-equiv="content-type" content="text/html; charset=utf-8" /> 
    <title>Google Maps API Sample</title> 
    
<script src="http://maps.google.com/maps?file=api&amp;v=2&amp;sensor=false&amp;key=ABQIAAAA1XbMiDxx_BTCY2_FkPh06RRaGTYH6UMl8mADNa0YKuWNNa8VNxQEerTAUcfkyrr6OwBovxn7TDAH5Q" type="text/javascript"></script>  
    <script type="text/javascript">
</script></head></html>

JavaScript

function my_function()
{    
   var Excel; 
   Excel = new ActiveXObject("Excel.Application"); 
   Excel.Visible = false; 
   return Excel.Workbooks.Open("C:/desktop/TEST.xls").ActiveSheet.Cells(l,i).Value;}
//where l is number of rows and i are columns...
var i=1;
var l=1;
do
{  
  a = my_function()   
  if (a!=null)  
  {    
    i++; 
     b=my_function()
     if(b!=null)
        initialize()
     i++;
  }   
  else
  {       
     l++;       
     i=1;        
  }    
}
while(a!=null || b!=null);
function initialize() {
  if (GBrowserIsCompatible()) {
    var map = new GMap2(document.getElementById("map_canvas"));
    map.setCenter(new GLatLng(24.884801, 67.056469), 13);
    map.addControl(new GSmallMapControl());
    map.addControl(new GMapTypeControl());
   
    var point = new GLatLng(a , b);
    map.addOverlay(new GMarker(point)); 
  }
}

HTML

  <body onload="initialize()" onunload="GUnload()" style="font-family: Arial;border: 0 none;"> 
    <h1 align="center">Plotting</h1> 
<hr width="50%"> 
    <div id="map_canvas" style="width: 900px; height: 1000px"></div> 
  </hr></body>

PS I guess there is some problem with do-while loop.
Please help me out.
Confused geminien

Posted 13-Jun-10 20:42pm

hadi n

Updated 29-Jun-10 17:29pm

Chris Maunder773K

v6

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Bassam Abdul-Baki · Answer 1 · 2011-01-14T02:16:00

You're opening up the Excel file at each loop. That's probably being locked from the first instance it is called and not reading it in the loop. Move your Excel.Workbooks.Open code into the initialize function and pass it to your function as a parameter. Since this is Excel, you can also make it a global variable.