Global.renderPageNavItem (text, cssClass, url, page)
render a single item for page-navigation bar

Sourcecode in Global/renderFunctions.js:
1:   function renderPageNavItem(text, cssClass, url, page) {
2:      var param = {"class": cssClass};
3:      if (!url)
4:         param.text = text;
5:      else
6:         param.text = Html.linkAsString({href: url + "?page=" + page}, text);
7:      renderSkin("pagenavigationitem", param);
8:      return;
9:   }