Image get disappear when page get refreshed when set client side using JavaScript

I am using javascript function to show and hide image onclientclick. But when any server side function is called then that image disappear ,i want that image should visible even if page get refereshed but this is th case when i click on show/hide image and image is visible then this should remialn visible even if page get refreshed and when image is not visible by click on show/hide image then that should be disappear even if page get refreshed.