function check_date_formated_field(field){
		var date= field.value;
		if(date == '') return;
		var reg = RegExp('([^0-9]+)',"g");
		date = date.replace(reg, '');
		var year = date.substr(4);
		if(year.length < 4){
			year = year.substr(-2);
			year = ( (parseInt(year)>70) ? '19' : '20') + year;
		}
		var day = date.substr(0,2);
		var month = date.substr(2,2);
		field.value = day + '/' + month + '/' + year;
	}

	function check_email(email) {
	   var reg = new RegExp('^[a-z0-9]+([_|\.|-]{1}[a-z0-9]+)*@[a-z0-9]+([_|\.|-]{1}[a-z0-9]+)*[\.]{1}[a-z]{2,6}$', 'i');
	   return reg.test(email);
	}