Error to populate lookup field onclick javascript

Question

I have below code which throws an error to populate lookup field ID value from one object to another. It unexpectedly tries to assign Name of Account object instead of ID. So it throws error. Can someone tell me why?

Javascript Code

 {!REQUIRESCRIPT("/soap/ajax/33.0/connection.js")}
{!REQUIRESCRIPT("/soap/ajax/33.0/apex.js")} 
//identify parent record

var FormR= new sforce.SObject("Form_Requests_abv__c");
FormR.id = '{!Form_Requests_abv__c.Id }';
FormR.name = '{!Form_Requests_abv__c.Name}';


// insert Sample Form transactions
var SampleFormTrans= new sforce.SObject("Sample_Order_Form_abv__c");

//SampleFormTrans.Account_abv__c = "{!Form_Requests_abv__c.Account_abv__c}";
var s= document.getElementById('{!Form_Requests_abv__c.Account_abv__c}');
SampleFormTrans.Account_abv__c = s;
var add= document.getElementById('{!Form_Requests_abv__c.Address_abv__c}');
//SampleFormTrans.Address_abv__c= '{!Form_Requests_abv__c.Address_abv__c}';
SampleFormTrans.Address_abv__c= add;
var FR= document.getElementById('{!Form_Requests_abv__c.Id}');
SampleFormTrans.Form_Request_abv__c= FR;
//SampleFormTrans.Form_Request_abv__c= '{!Form_Requests_abv__c.Id}';
SampleFormTrans.OwnerID= '{!Form_Requests_abv__c.OwnerId}';
SampleFormTrans.Quantity_abv__c= '{!Form_Requests_abv__c.Quantity_abv__c}';
//SampleFormTrans.Product_abv__c='{!Form_Requests_abv__c.Product_ID_abv__c}';
//SampleFormTrans.Form_template_abv__c='{!Form_Requests_abv__c.Form_Template_Name_abv__c}';
var FT= document.getElementById('{!Form_Requests_abv__c.Form_Template_Name_abv__c}');
SampleFormTrans.Form_Template_Name_abv__c= FT;

//get query
var query = "SELECT  Account_abv__c ,Address_abv__c,Form_Request_abv__c, "+
"OwnerID, Quantity_abv__c, Product_abv__c, Form_template_abv__c, Id FROM "+
"Sample_Order_Form_abv__c WHERE Form_Request_abv__c='{!Form_Requests_abv__c.Id}'"; 
var records = sforce.connection.query(query); 
alert(records);
var records1 = records.getArray('records');
alert(records1);
if(records[0]==null)
    {alert('New record to insert');
var result = sforce.connection.create([SampleFormTrans]);}
if(result[0].getBoolean("success"))
{
   alert('Sample Form Transaction inserted successfully');
   window.location.reload();
}
else{
  alert('Error : '+result);
}

var formId = '{!Sample_Order_Form_abv__c.Id}'; 
var expired = '{!Sample_Order_Form_abv__c.Expired_abv__c}'; 
var templateId = '{!Sample_Order_Form_abv__c.Form_template_Id_abv__c}'; 
if(expired == '1'){ 
alert("Form expired. Print option not available."); 
}else{ window.open('/apex/FormTemplatePrinter?ids='+formId+'&TemplateId='+templateId,'_blank'); 
}

Error

Successfully created but all lookup field values are blank.

Answer 1

Remove all document.getElementById('{!Form_Requests_abv__c.Form_Template_Name_abv__c}');

and add like this

SampleFormTrans.Product_abv__c='{!Form_Requests_abv__c.Product_ID_abv__c}';

this will contain your id

So just assign the Id

Like this

var SampleFormTrans= new sforce.SObject("Sample_Order_Form_abv__c");

SampleFormTrans.Account_abv__c = "{!Form_Requests_abv__c.Account_abv__c}";

SampleFormTrans.Address_abv__c= '{!Form_Requests_abv__c.Address_abv__c}';


SampleFormTrans.Form_Request_abv__c= '{!Form_Requests_abv__c.Id}';

SampleFormTrans.OwnerID= '{!Form_Requests_abv__c.OwnerId}';

SampleFormTrans.Quantity_abv__c= '{!Form_Requests_abv__c.Quantity_abv__c}';
SampleFormTrans.Product_abv__c= '{!Form_Requests_abv__c.Product_ID_abv__c}';
SampleFormTrans.Form_template_abv__c='{!Form_Requests_abv__c.Form_Template_Name_abv__c}';

After discussion with OP Found he was using wrong Field API Name..

var SampleFormTrans= new sforce.SObject("Sample_Order_Form_abv__c"); 

SampleFormTrans.Account_abv__c = '{!Form_Requests_abv__c.Account_abvId__c}'; 

SampleFormTrans.Address_abv__c= '{!Form_Requests_abv__c.Address_abvId__c}'; 


SampleFormTrans.Form_Request_abv__c= '{!Form_Requests_abv__c.Id}'; 

SampleFormTrans.OwnerID= '{!Form_Requests_abv__c.OwnerId}'; 

SampleFormTrans.Quantity_abv__c= '{!Form_Requests_abv__c.Quantity_abv__c}'; 

SampleFormTrans.Form_template_abv__c='{!Form_Requests_abv__c.Form_Template_Name_abvId__c}';