paging numbers not display,why?

I added method enablePaging(true,10,3,“pagingArea”,true,“recinfoArea”) to script block before load method, as my headers from

xml stream.but Neither headers display, nor do paging numbers. I can’t figure it out.give me some help.thank you

Please be sure that
    - you have dhtmlxgrid_pgn.js included in page
    - there are containers with ID=“pagingArea” and ID=“recinfoArea” on the page