var obj = {};
      
      for( var i = 0; i < elem_form.elements.length; i++ ){
         var elem = elem_form.elements[i];
         var e_name  = elem.name || "";
         var e_value = elem.value;
         if(e_name == ""){
            continue;
         }
         eval("obj = $.extend({ " + elem.name + ": e_value }, obj)");

      }