XMLHttpRequest in Firefox

objXml = new XMLHttpRequest();

//javascripts

<script type="text/javascript">

function Async(){ 
   var objXml = false; 

    if(navigator.appName == "Microsoft Internet Explorer") { 
        objXml = new ActiveXObject("Microsoft.XMLHTTP"); 
    }else{ 
        objXml = new XMLHttpRequest(); 
    }  
   this.newObj = objXml; 
} 

function RequestAFile(filename,asyncobj){
   asyncobj.open("GET", filename, true); 
   asyncobj.onreadystatechange=function() { 
      if(asyncobj.readyState == 4) { 
         alert('de contents van deze file zijn: ' + asyncobj.responseText); 
      } 
   } 
   asyncobj.send(null);  
}




//dan, roep je het zo aan: 
var file1xml = new Async(); 
var file2xml = new Async(); 

//als je het nodig hebt gebruik je bijvoorbeeld: 
RequestAFile('1.txt',file2xml.newObj);
RequestAFile('2.txt',file1xml.newObj);

</script>

//javascripts
      if(asyncobj.readyState == 4) {  
         return asyncobj.responseText;  
      }

//js

var file1xml = new Async(); 
document.foo.innerHTML = RequestAFile('2.txt',file1xml.newObj);

    if([COLOR="Red"]navigator.appName[/COLOR] == "Microsoft Internet Explorer") { 
        objXml = new ActiveXObject("Microsoft.XMLHTTP"); 
    }else{ 
        objXml = new XMLHttpRequest(); 
    }

    try
  {
    // Firefox, Opera 8.0+, Safari
   objXml = new XMLHttpRequest();
  }
  catch (e)
  {
    // Internet Explorer
    try
    {
      objXml = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch (e)
    {
      try
      {
        objXml = new ActiveXObject("Microsoft.XMLHTTP");
      }
        catch (e)
      {
        alert("Your browser does not support AJAX!");
        return false;
      }
    }
  }