JQuery.mb.gallery 1.5.5 new release

Major issue and bugfix: * added a new param: containment to let you choose either to load the gallery into a specific DOM element (a div on your page context) or up over your page. * Fixed a bug in IE that prevent the display of images if invoked a second time. * Fixed a bug in IE that mismatch the top margin of the gallery. * Now you can have links and images in the image description area.