DWZ (JUI) dwzPageBreak切换显示页数失效

经过firebug调试，这是一个bug，传到后台的参数没有得到及时替换，具体bug修复如下：

修改dwz.ajax.js中代码:

/**
 * 处理navTab中的分页和排序
 * targetType: navTab 或 dialog
 * rel: 可选 用于局部刷新div id号
 * data: pagerForm参数 {pageNum:"n", numPerPage:"n", orderField:"xxx", orderDirection:""}
 * callback: 加载完成回调函数
 */
// 存在一个bug，没有替换options中的numPerPage大小
// by ketayao
function dwzPageBreak(options){
    var op = $.extend({ targetType:"navTab", rel:"", data:{pageNum:"", numPerPage:"", orderField:"", orderDirection:""}, callback:null}, options);
    var $parent = op.targetType == "dialog" ? $.pdialog.getCurrent() : navTab.getCurrentPanel();
 
    if (op.rel) {
        var $box = $parent.find("#" + op.rel);
        var form = _getPagerForm($box, op.data);
        // by ketayao，替换form中的numPerPage值
        var params = $(form).serializeArray();
        if (op.numPerPage) {
            params[1].value = op.numPerPage;
        }
         
        if (form) {
            $box.ajaxUrl({
                type:"POST", url:$(form).attr("action"), data: params, callback:function(){
                    $box.find("[layoutH]").layoutH();
                }
            });
        }
    } else {
        var form = _getPagerForm($parent, op.data);
        var params = $(form).serializeArray();
        // by ketayao，替换form中的numPerPage值
        if (op.numPerPage) {
            params[1].value = op.numPerPage;
        }
         
        if (op.targetType == "dialog") {
            if (form) $.pdialog.reload($(form).attr("action"), {data: params, callback: op.callback});
        } else {
            if (form) navTab.reload($(form).attr("action"), {data: params, callback: op.callback});
        }
    }
}