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


function call_accordion() {
        jQuery('#Accordion').Accordion({
        active: 'h2.selected',
        header: 'h2.head',
        alwaysOpen: false,
        animated: true,
        showSpeed: 400,
        hideSpeed: 800
    });
};


addLoadEvent(call_accordion);