jBreadCrumb is a collapsible breadcrumb, which was developed to deal with deeply nested, verbosely named pages. It is smart in the sense that it collapses based upon the amount and length of the elements in the set. The breadcrumb uses a semitransparent .png overlay to achieve the gradient effect seen on the elements. Visually, it helps to show a "peek" at what is underneath.
And this breadcrumb plugin is compatible with ie 6, ie 7 and all standards compliant browsers.