Event.observe(window, 'load', init, false);

function init(){
	Event.observe('sign-form', 'submit', sign);
}

function showLoader(){ Element.show('progress'); }
function hideLoader(){ Element.hide('progress'); }


function sign(e){
	showLoader();
  	var url = 'sign_a.php';
	var pars = Form.serialize('sign-form');
	var target = 'newsig';
	var myAjax = new Ajax.Updater(target, url, {	method: 'get',	parameters: pars, onSuccess : hideLoader  
   });
   Event.stop(e);
}