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

function preparePopups() {
	if (!document.getElementsByTagName) return false;
	var lnks = document.getElementsByTagName("a");
	for (var i=0; i<lnks.length; i++)
	{
		if(lnks[i].className.indexOf("video") != -1)
		{
			lnks[i].onclick = function() {
				videoPopUp(this.getAttribute("href"));
				return false;
			}
		}
		if(lnks[i].className.indexOf("popup") != -1)
		{
			lnks[i].onclick = function() {
				popUp(this.getAttribute("href"));
				return false;
			}
		}
	}
}
/* opens a new window durrr */
function popUp(winURL) {
  window.open(winURL);
}
/* opens a new window for video player */
function videoPopUp(winURL) {
  window.open(winURL, '', 'height=300,width=400,scrollbars=0,menubar=0,status=0,toolbar=0,location=0,resizable=0');
}

addLoadEvent(preparePopups);