jsp page limit page number display

    

  
       var page_num = 2;//current page
       var max_show_page = 10;//Maximum number of paging pages displayed
       var max_page = 20;//Total number of pages
       //Display paging information from the first page
	var start_page = (page_num - Math.ceil(max_show_page / 2));
	if (start_page < 1) {
	    start_page = 1;
	}
	//The paging information is displayed to which page
	var end_page = page_num + max_show_page/2;
	if (end_page > max_page) {
	    end_page = max_page + 1;
	}
       for(var i=start_page;i < end_page;i++){
        //code for page number display
       }