function objXMLHttp(){

  if(window.XMLHttpRequest){
      var objetoXMLHttp = new XMLHttpRequest();
   return objetoXMLHttp;
  
  } else if(window.ActiveXObject){
      
	   var versoes = [ "MSXML2.XMLHttp.6.0", " MSXML2.XMLHttp.5.0" , "MSXML2.XMLHttp.4.0" , "MSXML2.XMLHttp.3.0" , "MSXML2.XMLHttp" , "Microsoft.XMLHttp" ];
	   
	   for (var i = 0; i < versoes.length; i++){
		 
		   try{
			   var objetoXMLHttp = new ActiveXObject(versoes[i]);
			   return objetoXMLHttp;
		   }catch (ex){
			  // nada aqui
		   }
	   
	   }
  
  
  }

    
}// JavaScript Document