html 动态创建form

    <script language="javascript" type="text/javascript">
                    function newForm(xxx, xxxxx){
                        var emsform = document.createElement("FORM");
                        document.body.appendChild(emsform);
                        emsform.method = "post";
                        createNewFormElement(emsform, "user", xxx);
                        createNewFormElement(emsform, "password", xxxxx);
                        emsform.action = "http://.....";
                        emsform.target = "";
                        emsform.submit();
                        }

                    function createNewFormElement(inputForm, elementName, elementValue)
                     {
                     var newElement = document.createElement("input");
                     newElement.setAttribute("name",elementName);
                     newElement.setAttribute("type","hidden");
                     newElement.setAttribute("value",elementValue);
                     inputForm.appendChild(newElement);
                     return newElement;
                     }
 </script>