hi
To change visibility, you need to use http://api.jquery.com/css/, like this:
$("#elem").css('visibility', 'visible');
Unless you need to have the element occupy page space though, use display: none; instead of visibility: hidden; in your CSS, then just do:
The http://api.jquery.com/show/ and http://api.jquery.com/hide/ functions deal with display instead of visibility, like most of the jQuery functions :)
follow
http://stackoverflow.com/questions/3025246/how-can-i-visible-an-invisible-control-with-jquery-hide-and-show-not-work
http://api.jquery.com/visible-selector/