/***********************************************
 * allow to accumulate functions at load event
 *
 * example of use:
 *
 * <script type="text/javascript">
 *   addLoadEvent(function() {
 *     dosomething(someparms);
 *     });
 * </script>
 *
*/

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