$layer_rand = rand(1,3); switch($layer_rand){ case "1" : $layer_top = "830px"; $layer_left = "850px"; break; case "2" : $layer_top = "245px"; $layer_left = "1130px"; break; case "3" : $layer_top = "565px"; $layer_left = "190px"; break; default : $layer_top = "830px"; $layer_left = "850px"; break; } ?>