Got dizzy with this problem,please help!

Question

I am trying to write a simple pagingGrid component,but i don't know why when i click next page icon,it still show the first page. i wrote a scroller component ,its renderer and a scroller tag.The paging process is like this, taking "next" action for example, and please be patient:
Step 1 i click the "next" icon, in the renderer it is rendered like this:
String clientId = component.getClientId(context);
         String formId=RendererUtil.getFormId(context,component);
         ScrollerAction scrollerAction=TagUtil.getCurrentScrollerAction();
         String path="http://localhost:8080/JSFOnStart/index.faces";
         scrollerAction.setClientID(clientId);
         scrollerAction.setFormID(formId);
         String imagePath="next.gif";
          writer.startElement("a", component);
         writer.writeAttribute("href", path, null);
         writer.writeAttribute("onclick",
                  // submit form in which the scroller resides
                   "document.forms['" + formId + "'].submit(); ", null);
         writer.startElement("img",component);
         writer.writeAttribute("src",imagePath,null);
         writer.endElement("img");
         writer.endElement("a");
         scrollerAction.setAction("next");The scrollerAction is a managed bean of ScrollerAction class with the session scope.I think I could share information between components by storing the info in session scoped managed bean,and every time i need it, i use the following code to get the instance:
public static ScrollerAction getCurrentScrollerAction()
               FacesContext context=FacesContext.getCurrentInstance();
               Application app=context.getApplication();
               VariableResolver vr=app.getVariableResolver();
               ScrollerAction scroller=(ScrollerAction)vr.resolveVariable(context,"scrollerAction");     
              return scroller;
          }I think during the session,i will always get the same instance no matter in which component i invoke the above method,maybe some problem with this?
Step 2: In the setProperties(..) method of PagingGridTag class, i get the ScrollerAction instance with the above getCurrentScrollerAction() method,and in the very similar way, i got a PagingParam instance which is also a session scoped managed bean and it stores the information like currentPage, totalPages and so on. By using the two instances, I got the action value and infos like current page and total page count.Based on these information, i do some calculation to set the value of current page,rows to be displayed,start row index and so on, the calculation is simple and i am sure it is right.The corresponding component is HtmlPagingGrid which is a subclass of HtmlDataTable, and i can set the "rowIndex" and "rows" of it to do paging.
But i don't know why it is not working well when i click the "next" icon.
Maybe it is one of such problems below or some other problems:
1 the javascript part is not right, i only use one page "index.jsp" to test it out.
2 everytime i try to get ScrollerAction and PagingParams instances,actually i got a new instances, so the informations are always for the first page.
The whole thing seems not complex,but i got really dizzy with it, and if you are interested in this topic and want to have the code to check the problem out, please send an email to me,mine is [email protected], then i will reply your email with my code attached.Thanks:)
Best Regards:)
Robin

Answer 1

*i deleted all my music on itunes to free up disc space on my pc.*
Why not leave it on the external drive and let iTunes use that for all your music?
*as i manually manage my itunes so as not to reload my music in a file*
I have no idea what this means.
I autosync my iPod with selected playlists.
Only new songs get loaded onto the iPod and old songs get taken off. It doesn't reload everything.
If yopu cannot find the podcasts on the iPod to delete them, you will need to restore the iPod.