Hi All - I am adding the action function in my visualforce page. I want to invoke an method from my controller on the onblur of the attribute. I get the following error, When I preview the visualforce page : The name can only contain underscores and alphanumeric characters. It must begin with a letter and be unique, and must not include spaces, end with an underscore, or contain two consecutive underscores.

Visualforce page code
------------------------------
<apex:page standardController="AccountLocation__c" extensions="AccountLocationEditController" recordSetVar="AccountLocation__c" >
 
    <script>
      function javaScript(){
       location();
      }
    </script>
 
 
<apex:form>
    <apex:actionFunction name="location" action="{!location}"  rerender="loc"/>
    <apex:param name="firstParam" assignTo="{!AccLoc.Name}" value="Bill To" />
 
    <apex:pageBlock title="Account Location Edit" mode="edit">
    <apex:pageBlockButtons >
    <apex:commandButton action="{!save}" value="Save"/>
    <apex:commandButton action="{!savenew}" value="Save & New"/>
    <apex:commandButton action="{!Cancel}" value="Cancel"/>
    </apex:pageBlockButtons>
 
    <apex:pageBlockSection title="Information" columns="2">
    <apex:inputField  value="{!AccLoc.Type__c}" required="true" onblur="javaScrpt()" />
    <apex:inputField value="{!AccLoc.AccountId__c}" />
    <apex:inputField id = "loc" value="{!AccLoc.Name}"  />
    </apex:pageBlockSection>

Controller Code
-------------------
public with sharing class AccountLocationEditController{
    Public AccountLocation__c AccLoc {get;set;}
    /*ApexPages.StandardController Controller = null;*/
 public AccountLocationEditController(ApexPages.StandardSetController stdController) {
       AccLoc = new AccountLocation__c ();
       Id strId= ApexPages.currentPage().getParameters().get('id');
      /*  if (strId!=null){
            AccLoc = [SELECT Id, Name,Type__c
                      FROM AccountLocation__c
                      WHERE Id = :strId];
                
        }*/
          system.debug('loc name' +AccLoc.Name);
       }
     
   Public PageReference location(){
       if (AccLoc.Type__c == 'Bill TO'){
                AccLoc.Name = 'Bill To Address';
       
          system.debug('loc name' +AccLoc.Name);
      }else {
          AccLoc.Name = 'Ship To Address';
       
      }
        return null;
        }
     
Please let me know if I had missed anything. Thanks you in Advance !