function ajaxGet(oggetto, funzione, div, altvar){

	if(oggetto!=null){
		var str = '';
		if(altvar != undefined){
			str = '&v2='+altvar;
		}
		var par = oggetto.value;
		var url = "index.php?option=com_gestoreimmobili&task=ajax&f="+funzione+"&v1="+par+str;
		//window.alert(url);
	 	var myAjaxR = new Request({url:url, method: 'get',
	 							onSuccess: function(responseText){	
										document.getElementById(div).innerHTML = responseText;
	 								}
			}).send();
	}
}