In order to get a link to be displayed in a different frame, use the target attribute of the <a> tag. To pass values on to an action, just use parameters in the query
string.
Struts will then map them to properties in the ActionForm bean.
Here is an example:
<a href="action1.do?property1=abc" target="frameB">Click 1</a>
<a href="action2.do?property1=def" target="frameB">Click 2</a>
<a href="action3.do?property1=xyz" target="frameB">Click 3</a>