paging result error

[thread_PHP]

hi all i have the following file using paging file 1 | 2 | 3 Next page when i click next 2 | 3 Next page and 1 is disappearing when i click next again 3 | 4 Next page leaving 2 invisible i am using $offset2 as a variable but it is not showing proper results please help me

thanks in advance

	
						for ($a=1;$a<=$pages;$a++) {
							if($a == $pagenumber)
							{
								$map[$a] ="$a";
							}
							else
							{
								$map[$a] ="<a href=javascript:loadPage(\"$script?offset=$offset2&$BasicURL&pageno=$pno&item_perpage=$item_perpage\")>$a</a>";
							}
							$offset2+=$item_perpage;
							$pno++;
						}
		*/

					for ($a=$pagenumber;$a<=($pagenumber+2);$a++) {

					print "Val 1 ==".($item_perpage*$a)." === Val 2 ==".$total[0]."<br>";

					if($a == $pagenumber)
					{
						$map[$a] ="$a";
					}
					else
					{
						$map[$a] ="<a href=javascript:loadPage(\"$script?offset=$offset2&$BasicURL&pageno=$a&item_perpage=$item_perpage\")>$a</a>";
					}

					if(($item_perpage*$a) > $total[0])
					{
						break;
					}

					print "Pagenumber = ".$pagenumber."<br>";
					$offset2+=$item_perpage*$pagenumber;
					print "Offset == ".$offset2."<br>";
					$pno++;

				}

this loop i am getting error