function archiveDropdown() {
	var menu = document.getElementById("archive-dropdown");

	menu.onchange = function() {
		document.location.href=this.options[this.selectedIndex].value;
	}
}

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

addLoadEvent(archiveDropdown);