function wpsc_pagination($totalpages = '', $per_page = '', $current_page = '', $page_link = '') {
	global $wp_query;
	$num_paged_links = 4; //amount of links to show on either side of current page

	$additional_links = '';

	//additional links, items per page and products order
	if( get_option('permalink_structure') != '' ){
		$additional_links_separator = '?';
	}else{
		$additional_links_separator = '&';
	}
	if( !empty( $_GET['items_per_page'] ) ){
			$additional_links = $additional_links_separator . 'items_per_page=' . $_GET['items_per_page'];
			$additional_links_separator = '&';
	}
	if( !empty( $_GET['product_order'] ) )
		$additional_links .= $additional_links_separator . 'product_order=' . $_GET['product_order'];

	$additional_links = apply_filters('wpsc_pagination_additional_links', $additional_links);
	//end of additional links

	if(empty($totalpages)){
			$totalpages = $wp_query->max_num_pages;
	}
	if(empty($per_page))
		$per_page = (int)get_option('wpsc_products_per_page');

	$current_page = absint( get_query_var('paged') );
	if($current_page == 0)
		$current_page = 1;

	if(empty($page_link))
		$page_link = wpsc_a_page_url();

	//if there is no pagination
	if(!get_option('permalink_structure')) {
		$category = '?';
		if(isset($wp_query->query_vars['wpsc_product_category']))
			$category = '?wpsc_product_category='.$wp_query->query_vars['wpsc_product_category'];
		if(isset($wp_query->query_vars['wpsc_product_category']) && is_string($wp_query->query_vars['wpsc_product_category'])){

			$page_link = get_option('blogurl').$category.'&paged';
		}else{
			$page_link = get_option('product_list_url').$category.'&paged';
		}

		$separator = '=';
	}else{
		if ( isset( $wp_query->query_vars['wpsc_product_category'] ) ) {
			$category_id = get_term_by( 'slug', $wp_query->query_vars['wpsc_product_category'], 'wpsc_product_category' );
			$page_link = trailingslashit( get_term_link( $category_id, 'wpsc_product_category' ) );
		} else {
			$page_link = trailingslashit( get_option( 'product_list_url' ) );
		}
		$separator = 'page/';
	}

	// If there's only one page, return now and don't bother
	if($totalpages == 1)
		return;
	// Pagination Prefix
	$output = __('Pages: ','wpsc');

	if(get_option('permalink_structure')){
		// Should we show the FIRST PAGE link?
		if($current_page > 2)
			$output .= "<a href=\"". esc_url( $page_link . $additional_links ) . "\" title=\"" . __('First Page', 'wpsc') . "\">" . __('&laquo; First', 'wpsc') . "</a>";

		// Should we show the PREVIOUS PAGE link?
		if($current_page > 1) {
			$previous_page = $current_page - 1;
			if( $previous_page == 1 )
				$output .= " <a href=\"". esc_url( $page_link . $additional_links ) . "\" title=\"" . __('Previous Page', 'wpsc') . "\">" . __('&lt; Previous', 'wpsc') . "</a> /";
			else
				$output .= " <a href=\"". esc_url( $page_link .$separator. $previous_page . $additional_links ) . "\" title=\"" . __('Previous Page', 'wpsc') . "\">" . __('&lt; Previous', 'wpsc') . "</a> /";
		}
		$i =$current_page - $num_paged_links;
		$count = 1;
		if($i <= 0) $i =1;
		while($i < $current_page){
			if($count <= $num_paged_links){
				if($count == 1)
					$output .= "<a href=\"". esc_url( $page_link . $additional_links ) . "\" title=\"" . sprintf( __('Page %s', 'wpsc'), $i ) . " \">".$i."</a>";
				else
					$output .= " <a href=\"". esc_url( $page_link .$separator. $i . $additional_links ) . "\" title=\"" . sprintf( __('Page %s', 'wpsc'), $i ) . " \">".$i."</a>";
			}
			$i++;
			$count++;
		}
		// Current Page Number
		if($current_page > 0)
			$output .= "<span class='current'>$current_page</span>";

		//Links after Current Page
		$i = $current_page + $num_paged_links;
		$count = 1;

		if($current_page < $totalpages){
			while(($i) > $current_page){

				if($count < $num_paged_links && ($count+$current_page) <= $totalpages){
						$output .= " <a href=\"". esc_url( $page_link .$separator. ($count+$current_page) .$additional_links ) . "\" title=\"" . sprintf( __('Page %s', 'wpsc'), ($count+$current_page) ) . "\">".($count+$current_page)."</a>";
				$i++;
				}else{
				break;
				}
				$count ++;
			}
		}

		if($current_page < $totalpages) {
			$next_page = $current_page + 1;
			$output .= "<span>/</span><a href=\"". esc_url( $page_link  .$separator. $next_page . $additional_links ) . "\" title=\"" . __('Next Page', 'wpsc') . "\">" . __('Next &gt;', 'wpsc') . "</a>";
		}
		// Should we show the LAST PAGE link?
		if($current_page < $totalpages - 3) {
			$output .= "<a href=\"". esc_url( $page_link  .$separator. $totalpages . $additional_links ) . "\" title=\"" . __('Last Page', 'wpsc') . "\">" . __('Last &raquo;', 'wpsc') . "</a>";
		}
	} else {
		// Should we show the FIRST PAGE link?
		if($current_page > 4)
			$output .= "<a href=\"". remove_query_arg('paged' ) . "\" title=\"" . __('First Page', 'wpsc') . "\">" . __('&laquo; First', 'wpsc') . "</a>";

		// Should we show the PREVIOUS PAGE link?
		if($current_page > 1) {
			$previous_page = $current_page - 1;
			if( $previous_page == 1 )
				$output .= " <a href=\"". remove_query_arg( 'paged' ) . $additional_links . "\" title=\"" . __('Previous Page', 'wpsc') . "\">" . __('&lt; Previous', 'wpsc') . "</a>";
			else
				$output .= " <a href=\"". add_query_arg( 'paged', ($current_page - 1) ) . $additional_links . "\" title=\"" . __('Previous Page', 'wpsc') . "\">" . __('&lt; Previous', 'wpsc') . "</a>";
		}
		$i =$current_page - $num_paged_links;
		$count = 1;
		if($i <= 0) $i =1;
		while($i < $current_page){
			if($count <= $num_paged_links){
				if($i == 1)
					$output .= " <a href=\"". remove_query_arg('paged' ) . "\" title=\"" . sprintf( __('Page %s', 'wpsc'), $i ) . " \">".$i."</a>";
				else
					$output .= " <a href=\"". add_query_arg('paged', $i ) . "\" title=\"" . sprintf( __('Page %s', 'wpsc'), $i ) . " \">".$i."</a>";
			}
			$i++;
			$count++;
		}
		// Current Page Number
		if($current_page > 0)
			$output .= "<span class='current'>$current_page</span>";

		//Links after Current Page
		$i = $current_page + $num_paged_links;
		$count = 1;

		if($current_page < $totalpages){
			while(($i) > $current_page){

				if($count < $num_paged_links && ($count+$current_page) <= $totalpages){
						$output .= " <a href=\"". add_query_arg( 'paged', ($count+$current_page) ) . "\" title=\"" . sprintf( __('Page %s', 'wpsc'), ($count+$current_page) ) . "\">".($count+$current_page)."</a>";
				$i++;
				}else{
				break;
				}
				$count ++;
			}
		}

		if($current_page < $totalpages) {
			$next_page = $current_page + 1;
			$output .= "<a href=\"". add_query_arg( 'paged', $next_page ) . "\" title=\"" . __('Next Page', 'wpsc') . "\">" . __('Next &gt;', 'wpsc') . "</a>";
		}
		// Should we show the LAST PAGE link?
		if($current_page < $totalpages) {
			$output .= "<a href=\"". add_query_arg( 'paged', $totalpages ) . "\" title=\"" . __('Last Page', 'wpsc') . "\">" . __('Last &raquo;', 'wpsc') . "</a>";
		}
	}
	// Return the output.
	echo $output;
}