[jQuery] How to determine number of elements after dom manipulation ?

[Richard Bakker]

I am generating elements (img's) based on data from an xml file.
Once that is done, I want to determine the number of icons that were
generated.
 i do a: alert($('img').size())
result: 0, which isn't the case

how can i determine them after they have generated ?
**********************************************
function dataloader(location,service,div){
       $.ajax({
               type: "GET",
               url: "includes/data.xml",
               dataType: "xml",
               success: function(xml) {

                       $(xml).find('group').each(function(){
                               if($(this).attr("name") == service){
                               $(this).find("Service").each(function(){
                               var type = $(this).find("Type").text()
                               var host = $(this).find("Host").text()
                               var name = $(this).find("Name").text()
                               var site = $(this).find("Site").text()

                               if(type == "Host" && site == location){
                                       $('<img src="images/ 
server.jpg" title="'+ host +'" />').appendTo
('#'+div);
                               }
                       })
                       }
                       });
               }
       });

}