function loadPage(url, idContenedor, method){
	var target = $(idContenedor);
	new Ajax.Request(url, {method:'get',
		onSuccess: function(transport){	
			target.innerHTML = transport.responseText || "no response text"; 
			if(method!=null){
				method();
			}
		},
		onFailure: function(){ alert('Something went wrong...')}});
}


function postAjax(url, param, idContenedor){
	new Ajax.Request(url, {method:'post', onSuccess: function(response){ 
		$(idContenedor).innerHTML = response.transport.responseText; refresh();},
	onFailure: function(){alert('Something went wrong...');},
	parameters: param});	
}