Pagination with filters

class hikashopInStockCheckboxClass extends hikashopFilterTypeClass{
	function display($filter, $divName, &$parent, $datas='', $type='',$tab=''){
		$html='';
		$selected=parent::display($filter, $divName, $parent);
		$checked='';

		if($selected=='in_stock'){
			$checked='checked="checked"';
		}

		$onClick='';
		if($filter->filter_direct_application){
			$onClick='onchange="document.forms[\'hikashop_filter_form_'.$divName.'\'].submit();"';
		}

		$html.= '<span class="hikashop_filter_checkbox"><input '.$onClick.' '.$checked.' type="checkbox" name="filter_'.$filter->filter_namekey.$tab.'" value="in_stock"></span>';
		$html.='<span style="margin-left: 5px;">'.$filter->filter_name.'</span>';
		return $html;
	}
}

class hikashopInStockCheckboxClass extends hikashopFilterTypeClass{
	function display($filter, $divName, &$parent, $datas='', $type='',$tab=''){
		$html = '';
		$selected = parent::display($filter, $divName, $parent);
		$checked = '';
		$value = '';
		
		if($selected=='in_stock'){
			$checked='checked="checked"';
			$value='in_stock';
		}

		if($filter->filter_direct_application){
			$onClick = 'document.forms[\'hikashop_filter_form_'.$divName.'\'].submit();';
		}
		$onClick = 'onchange="var hiddenInput = document.getElementById(\'filter_'.$filter->filter_namekey.$tab.'_hidden\');if(this.checked){ hiddenInput.value=\'in_stock\'; }else{ hiddenInput.value=\'\'; } '.$onClick.'"';

		$html.= '<span class="hikashop_filter_checkbox"><input '.$onClick.' '.$checked.' type="checkbox" name="filter_'.$filter->filter_namekey.$tab.'_checkbox" value="in_stock"><input id="filter_'.$filter->filter_namekey.$tab.'_hidden" type="hidden" name="filter_'.$filter->filter_namekey.$tab.'" value="'.$value.'"></span>';
		$html.='<span style="margin-left: 5px;">'.$filter->filter_name.'</span>';
		return $html;
	}
}