function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

/* custom function - todo move to library */
document.getElementsByClassName = function(name) {
  var results = new Array();
  var elems = document.getElementsByTagName("*");
  for (var i=0; i<elems.length; i++) {
    if (elems[i].className.indexOf(name) != -1) {
      results[results.length] = elems[i];
    }
  }
  return results;
};


// add onload scripts
addLoadEvent(hideShow);
addLoadEvent(highlight);
addLoadEvent(checkBoxLimit);
addLoadEvent(nudgePanel);
addLoadEvent(basicSearchClickEvents);
addLoadEvent(advancedSearchDateFieldEvents);
addLoadEvent(setUpTipsPanel);
addLoadEvent(pullInPubImage);
addLoadEvent(applyAddThisEvents);
addLoadEvent(openNewWindow);
addLoadEvent(addPrintClickEvent);