With CSS you can achieve that if you nest elements, but it's probably not what you want.
Therefore you might need some JS code like (add this to the hackershell)
$('#view').on('hover', '.wp-hovertrigger', // bind to all objects, including objects loaded in the future
function(){ // hover start
$('.wp-hovertarget').fadeIn();
},
function(){ // hover stop
$('.wp-hovertarget').fadeOut();
});
Then you go click on the element that should trigger the effect and add the style class "hovertrigger" (not need to add anything to the style, just needs the class) and next click on the element that should appear/disappear and add the style class "hovertarget" (if you want it to be hidden initially add the style "display: none")
I have not tested the code, so when you tried it out and it does not work show me the example and I will correct it.
if you have several triggers/targets use "...trigger1" "...target1" etc.