var pagecur = 0;
var pageDivs;

function prev()
{
  if(pageDivs.length == 0) {
    return;
  }
  
  pageDivs[pagecur].style.display = 'none';
  pagecur = pagecur > 0 ? pagecur - 1 : pageDivs.length - 1;
  pageDivs[pagecur].style.display = 'block';
}

function next()
{
  if(pageDivs.length == 0) {
    return;
  }
  
  pageDivs[pagecur].style.display = 'none';
  pagecur = pageDivs.length > (pagecur + 1) ? pagecur + 1 : 0;
  pageDivs[pagecur].style.display = 'block';
}

function initPager()
{
  var hgh = 0;

  pageDivs = getElementsByClassName(document, "div", "page");
  for(i = 0;i < pageDivs.length;i++) {
    pageDivs[i].style.display = 'block';
    hgh = pageDivs[i].offsetHeight > hgh ? pageDivs[i].offsetHeight : hgh;
    pageDivs[i].style.display = 'none';
  }

  if(pageDivs.length > 0) {
    gE('news-content').style.height = hgh  + "px";
    pageDivs[pagecur].style.display = 'block';
  }
}

dom.addEvent(window, 'load', initPager);