Can't get the pagination buttons to work

I've tried many things, including looking at code that works. The buttons actually work, but the button style isn't showing up. When inspecting the element I get

<span class="first paginate_button paginate_button_disabled" id="library_v4_first">First</span>

here is my code

	$(document).ready( function () {
    oTable = $('#library_v4').dataTable({
    	
    	'bProcessing': true,
    	'bServerSide': true,
 
		'sDom': '<\"fg-toolbar ui-toolbar ui-widget-header ui-helper-clearfix\"flp<\"clear\">>rt<\"fg-toolbar ui-toolbar ui-corner-bl ui-corner-br ui-widget-header ui-helper-clearfix\"ip<\"clear\">>',

		       'sPageButton': 'paginate_button',
        'sPageButtonActive': 'paginate_active',
		'sAjaxSource': $DataTableSource,
		'sPaginationType': 'full_numbers'
		
		
		});
	} );