diff --git a/app/views/admin/site_panel/_form.html.erb b/app/views/admin/site_panel/_form.html.erb
index eef59e1..b6b5801 100644
--- a/app/views/admin/site_panel/_form.html.erb
+++ b/app/views/admin/site_panel/_form.html.erb
@@ -67,13 +67,13 @@
         <div class="control-group">
           <%= f.label :site_name ,"Site Name", :class => "control-label muted" %>
           <div class="controls">
-            <%= f.text_field :site_name, :id => "site_name", :placeholder => "xxx_xxx", :oninput=> "replace_domain_input(this)" %>
+            <%= f.text_field :site_name, :id => "site_name", :placeholder => "xxx_xxx", :oninput=> "replace_input(this)" %>
             <div class="hint">schoolname_deptname eg: nctu_eed</div>
           </div>
         </div>
 
         <div class="control-group">
-          <%= f.label :domain_name ,"Domain Name", :class => "control-label muted", :oninput=> "replace_domain_input(this)" %>
+          <%= f.label :domain_name ,"Domain Name", :class => "control-label muted", :oninput=> "replace_input(this)" %>
           <div class="controls">
             <div class="domain_group">
               <input type="text" onchange="change_domain_input(this)" oninput="replace_domain_input(this)">
@@ -134,7 +134,7 @@
       var current_root_domain_text = $('.root_domain_group').eq(index).find('select').val()
       if ($input.val()==pre_site_name){
         if($("#site_name").val() != ""){
-          $input.val($("#site_name").val().replace("_","-") + ".");
+          $input.val($("#site_name").val().replaceAll("_","-") + ".");
         }
       }
       $('.domain_group').eq(index).find('input[type="hidden"]').val($('.domain_group').eq(index).find('input[type="text"]').val()+current_root_domain_text)
@@ -204,7 +204,7 @@
 
     //$('#domain_name').siblings('.hint').html('schoolname-deptname.'+domain_name+' eg: nctu-eed.'+domain_name);
     change_domain_name('all');
-    pre_site_name = val.replace("_","-")+'.';
+    pre_site_name = val.replaceAll("_","-")+'.';
     $("#db_name").val(val);
     type = (type == "School" ? "school_sites" : "orbit_sites" );
     if(school != ""){
@@ -214,16 +214,22 @@
     }
   })
   $("#school_name").on("input",function(){
+    replace_input(this);
     var school = $(this).val();
     if(school != ""){
       $("#path").val("/home/rulingcom/school_sites/" + school);
     }
   })
+  function replace_input(ele){
+    var correct_val = $(ele).val().match(/([0-9]||[a-z]||[-_])*/gi).join("");
+    $(ele).val(correct_val);
+  }
   function replace_domain_input(ele){
     var correct_val = $(ele).val().match(/([0-9]||[a-z]||[-_.])*/gi).join("");
-    $(ele).val(correct_val.replace("_","-"));
+    $(ele).val(correct_val.replaceAll("_","-"));
   }
   function change_domain_input(ele){
+    replace_domain_input(ele);
     change_domain_name($(ele).parents('.domain_group').index('.domain_group'))
   }
   $("#site_construct_site_type").val("School");