Modify header redirection

I have a script that contains that part: ######### mysql_query(\"UPDATE users SET domain = \'\".$_GET[\'domain\'].\"\' WHERE username = \'\".$_SESSION[\'username\'].\"\'\"); header(\"Location: [login to view URL]\"); } if (isset($_GET[\'action\'])){ if ($_GET[\'action\'] == 1){ mysql_query(\"UPDATE googleimagefound SET status = 3 WHERE id = \".$_GET[\'q\'].\"\"); }else if ($_GET[\'action\'] == 2){ mysql_query(\"UPDATE googleimagefound SET deleted = 1 WHERE id = \".$_GET[\'q\'].\"\"); }else if ($_GET[\'action\'] == 3){ mysql_query(\"UPDATE googleimagefound SET status = 2 WHERE id = \".$_GET[\'q\'].\"\"); }else if ($_GET[\'action\'] == 4){ mysql_query(\"UPDATE googleimagefound SET status = 5 WHERE id = \".$_GET[\'q\'].\"\"); } ########### By clicking on a button, the file \"[login to view URL]\" is loaded newly. My problem now is: When I am on the page \"[login to view URL]\", I dont want the script to load [login to view URL], but \"[login to view URL]\" - means: The script shall load the lastly opened URL, here: \"[login to view URL]\"