I have an item list for new hires.
Every new item created starts a serial approval workflow. The task list creates
a task for same.
The link of the task item created is:
/_layouts/WrkTaskIP.aspx?List=[LIST_ID]&ID=[ID]
This task item has Approve / Reject buttons as we know.

My need:
On my new hire list item created, its display form should also show a link to
related workflow created for this item. [I have done this]
Now remaining is it should show a link to Approve and Reject the workflow.
So in short I need a code for task Approve & Rejection.

If possible it can accept comments.
I am working at user end; and not familiar with .Net coding. If you can help
me with JQuery / JavaScript / SharePoint Designer customization solution that
would be great.