Spring MVC and PopUps

Hi Experts,

I am working on Spring MVC. The scenario is as below.

1. Click on a button "Assign Roles" in the Screen "A"
2. Pops up Screen "B" with roles
3. Select roles in screen B and click on the button "Add Selected"
4. "Add Selected" button will invoke a JS function, which will submit the form

The Screen A and Screen B are sharing the same command object "command". While clicking on "Add Selected", it invokes a method in the controller

       @RequestMapping(value="/addSelected", method=RequestMethod.POST)
      public String addSelected(@ModelAttribute Authoriser authoriser){
            System.err.println("Entered the addSelected method in AuthoriserListController");
            System.err.println("authoriser.getRoleName(): [" + authoriser.getRoleName() + "]");
            return "ETWCreateAuthoriser";
      }
The issues are,

1. It is loading the <return "ETWCreateAuthoriser";> the page in the popup itself. I need it to reload the parent page, Screen A with the selected roles.
2. The command object in the method, "addSelected"  is null

I need to select the roles from the popup and save the selected roles in the database and then return all the roles to the parent screen A. Please advice.

Thanks,
Vijay Prabakar

//This function is invoked when the user clicks on "Add Selected" button
function addSelectedFunction(){ 
	
	document.getElementById("form1").action="/ETW/authoriser/addSelected.htm";
	document.getElementById("form1").submit();
}

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