Page number not highlighted when selected. ( groups, my curriki-->Contributions/collections)

Browse Groups By Subject > Click any Subject-->By deafult 1-st page is displayed and '1' will be shown in red color. Click on any other page number. The corresponding page number is not displayed in red color. Also no tool tip shown for Previous & Next link. Same is the case with My Curriki -->Contributions/collections. ( In case of Search a resource these 2 functionalities works fine).