function formValidation(obj_form){
	var flag_error = 0;
	var str_error_msg = "";

	for(var i = 0; i < obj_form.length; i++){
		obj_field = obj_form[i];
		field_xtype = (obj_field.getAttribute("xtype")) ? obj_field.getAttribute("xtype").trim().toLowerCase() : "";
		field_label = (obj_field.getAttribute("label")) ? obj_field.getAttribute("label").trim().toUpperCase() : "";
		field_value = (obj_field.value) ? obj_field.value.trim() : "";
		field_id = (obj_field.id) ? obj_field.id.trim() : "";
		field_name = (obj_field.name) ? obj_field.name.trim() : "";

		switch(field_xtype){
			case "not_empty":
				if(field_value == ""){
					obj_field.value = field_value;
					flag_error = 1;
					str_error_msg += "\t- "+ field_label +" (OBRIGATÓRIO)\n";
				}
				break;
			case "valid_email":
				if(field_value == "" || !isEmail(field_value)){
					obj_field.value = field_value;
					flag_error = 1;
					str_error_msg += "\t- "+ field_label +" (E-MAIL VÁLIDO)\n";
				}
				break;
			case "select_one":
				if(obj_field[0].selected == true){
					flag_error = 1;
					str_error_msg += "\t- "+ field_label +" (SELECIONE UMA OPÇÃO)\n";
				}
				break;
			case "number":
				var pattern = /^\d+$/;
				if(field_value != ""){
					if(!pattern.test(field_value)){
						flag_error = 1;
						str_error_msg += "\t- "+ field_label +" (APENAS NÚMEROS)\n";
					}
				}
				break;
		}
	}
	if(flag_error == 1){
		var str_alert = "";
		str_alert += "___________________________________\n\n";
		str_alert += "Por favor, verifique os seguintes campos:\n\n";
		str_alert += str_error_msg +"\n";
		str_alert += "___________________________________";

		alert(str_alert);

		return false;
	}
}