Open repeater link in same window

I am trying to get my repeater links to open on the same page, can anyone please advise on how to do this?
I have renamed the link " button1 " and just need to know the exact code I would input at the onClick function.
I have a number of repeaters on my website so I need to add the same code to those as well.
Looking forward to getting this resolved as driving me crazy.
Thanks
Dean

@deanray2809 do you solve it?