Something

<?phpfunction displaythumbnails(){	global $thumbcolumns;	global $thumbrows;	global $lastimagevalue;	global $thumbborder;	global $thumbpadding;	global $maxthumbdimension;	$pages = ceil($lastimagevalue / ($thumbrows * $thumbcolumns));	$currentpage = 1;	if(($_GET[page] > 1) && ($_GET[page] <= $pages)) { $currentpage = $_GET[page];} // validates page= info	$currentimage = 1;	if($currentpage > 1) { 		$currentimage = (($thumbrows * $thumbcolumns * ($currentpage -1))+1);  // finds start image for given page.		echo '<a href="' . pageurl($currentpage-1) . '">Previous</a> ' ;	}	else{ echo 'Previous ' ;}	if($currentpage < $pages){echo '<a href="' . pageurl($currentpage+1) . '">Next</a>';}	else{ echo 'Next';}}function displaythubmbnails(){	global $thumbcolumns, $thumbrows, $lastimagevalue, $thumbborder, $thumbpadding, $maxthumbdimension;		$pages = ceil($lastimagevalue / ($thumbrows * $thumbcolumns));	if ( is_numeric($_GET['page']) && $_GET['page'] > 1  && $_GET['page'] <= $pages )		$currentpage = $_GET['page'];	else 		$currentpage = 1;				if ( $currentpage > 1 )		{			$currentimage = (($thumbrows * $thumbcolumns * ($currentpage - 1)) + 1 );			echo "<a href=\"". pageurl($currentpage-1) ."\">Next</a>";		}		else 			echo "Previous";				if ( $currentpage < $pages ) 			echo ....		else....				/* or..	if ( is_numeric($_GET['page']) && $_GET['page'] > 1  && $_GET['page'] <= $pages) )	{		$currentpage = $_GET['page'];	}	else	{	...	}	*/}