Question

i have two divs with the same ids but one has display=none and the other has display=block
i want to delete the one with display=’none’
i am using javascript framework prototype

Answer 1

You should switch to giving the divs classes instead of id’s. ID’s are unique identifiers, thus are unique, and a page should only contain one element per id (an id can not have multiple elements).

If you’d gave the divs classes instead of id’s you could do this:

$$(".<your_class_here>").reject(Element.visible).each(Element.remove);

My Prototype is a bit rusty, but I think this should do it.

EDIT: forgot you can’t directly filter by CSS properties.