The code below was created for us as a custom button in the UI on the Opportunity object. I would like to now include it in a Visualforce page for a custom object as a Commandbutton. I am not very familiar with JavaScript. Can anyone help me convert this code to a script I can use in a VF page? Thanks.
{!REQUIRESCRIPT("/apex/dsfs__DocuSign_JavaScript")}
//********* Option Declarations (Do not modify )*********//
var CRL='';
var DST='';
var CES='';
//*************************************************//
// Modify individual options here:
// Related Content (default no related content)
// Custom Recipient List
CRL = 'Email~{!JSENCODE(Opportunity.Primary_Contact_Email__c)};
FirstName~{!JSENCODE(Opportunity.Primary_Contact_FirstName__c)};
LastName~{!JSENCODE(Opportunity.Primary_Contact_LastName__c)};
Role~Signer1,Email~test@test.com;FirstName~Test;LastName~Test1;
Role~Signer 2';
DST = '0E9AB63C-62C0-4D01-B91A-E58849B7B573';
CES='Insertion Order signature request for {!JSENCODE(Opportunity.Account_Name_Rendered__c)}';
//********* Page Callout (Do not modify) *********//
window.location.href = "/apex/dsfs__DocuSign_CreateEnvelope?DSEID=0&STB=1&SourceID={!Opportunity.Id}&LA=0&CRL="+CRL+"&DST="+DST+"&CES="+CES;
//*******************************************//
<script>
tags?