psuedo..
code:
if left(URL, 7) != "http://" then
URL = "http://" & URL
end if
thats how i would do it...
in php thats something like..
code:
$pos = strpos($URL, "http://");
if ($pos === false) {
$URL = "http://". $URL . "";
} else {
echo "its there ";
}