Here's my little Javascript Perl Interpreter. It's much easier than you think.

#!/usr/bin/perl
######################################################################
+#########
# JtoP.cgi                                                            
+        #
#                                                                     
+        #
# This program is distributed in the hope that it will be useful,     
+        #
# but WITHOUT ANY WARRANTY; without even the implied warranty of      
+        #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       
+        #
# GNU General Public License for more details.                        
+        #
#                                                                     
+        #
#                                                                     
+        #
# Last modified: 06/27/10                                             
+        #
######################################################################
+#########

# Set-up the cgi enviroment
# this little gizmo is something I adopted
# and works like a champ
use CGI;
$query = new CGI;
@names = $query->param;
foreach $parameter (@names) {
    $_ = $query->param($parameter);
    $input{$parameter} = $_;
}

# we won't have this until the Ajax kicks in after page load
# then it happens quietly behind the scenes
if ($_) {
    $screenwidth = $input{'screenwidth'};
    $screenheight = $input{'screenheight'};
    $availwidth = $input{'availwidth'};
    $availheight = $input{'availheight'};
    $screen = "$input{'screenwidth'} x $input{'screenheight'}";
    $availscreen = "$input{'availwidth'} x $input{'availheight'}";
    $colordepth = $input{'colordepth'};
    
    open(FILE, ">>foobat.txt");
    print FILE "$screen\n";
    print FILE "$availscreen\n";
    print FILE "$colordepth\n";
    close FILE;
}

# no HTML here just get to the Ajax and send the data
    print "content-type: text/html\n\n";
    print qq~
<script type="text/javascript">
// OOAjax thanks to Patrick Hunlock
function ajaxObject(url, callbackFunction) {
  var that=this;      
  this.updating = false;
  this.abort = function() {
    if (that.updating) {
      that.updating=false;
      that.AJAX.abort();
      that.AJAX=null;
    }
  }
  this.update = function(passData,postMethod) { 
    if (that.updating) { return false; }
    that.AJAX = null;                          
    if (window.XMLHttpRequest) {              
      that.AJAX=new XMLHttpRequest();              
    } else {                                  
      that.AJAX=new ActiveXObject("Microsoft.XMLHTTP");
    }                                             
    if (that.AJAX==null) {                             
      return false;                               
    } else {
      that.AJAX.onreadystatechange = function() {  
        if (that.AJAX.readyState==4) {             
          that.updating=false;                
          that.callback(that.AJAX.responseText,that.AJAX.status,that.A
+JAX.responseXML);        
          that.AJAX=null;                                         
        }                                                      
      }                                                        
      that.updating = new Date();                              
      if (/post/i.test(postMethod)) {
        var uri=urlCall+'?'+that.updating.getTime();
        that.AJAX.open("POST", uri, true);
        that.AJAX.setRequestHeader("Content-type", "application/x-www-
+form-urlencoded");
        that.AJAX.setRequestHeader("Content-Length", passData.length);
        that.AJAX.send(passData);
      } else {
        var uri=urlCall+'?'+passData+'&timestamp='+(that.updating.getT
+ime()); 
        that.AJAX.open("GET", uri, true);                             
        that.AJAX.send(null);                                         
      }              
      return true;                                             
    }                                                                 
+          
  }
  var urlCall = url;        
  this.callback = callbackFunction || function () { };
}

    // get the variables
    //var sw = document.getElementById("screenwidth").value;
    //var sh = document.getElementById("screenheight").value;
    //var aw = document.getElementById("availwidth").value;
    //var ah = document.getElementById("availheight").value;
    //var cd = document.getElementById("colordepth").value;
    var sw = screen.width;
    var sh = screen.height;
    var aw = screen.availWidth;
    var ah = screen.availHeight;
    var cd = screen.colorDepth;
    
    // the Ajax object
    var myRequest = new ajaxObject('JtoP.cgi');
    
    // the query string
    var sendString = 'screenwidth='+sw+'&screenheight='+sh+'&availwidt
+h='+aw+'&availheight='+ah+'&colordepth='+cd;
    
    // and go man go
    myRequest.update(sendString,'POST');

</script>
~;

1;
[download]

It works without form fields. It send the javascript data straight to Perl upon page load. Maybe too simple but it works like a charm. Ted Cambron tedcambron@hotmail.com

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