Use greybox withgmaps

Could anyone help me with greybox implementation?
I am using gmaps and views to display a map with location enabled nodes on it.
Currently when you click on a marker it displays a popup balloon with a link to the node.
I used the field node: title with the link option to get this to work.
What I want is for the link to use greybox to open the node rather than a normal link.
Any advice?