If you open the Server Behavior it will have the syntax I mentioned. If you want to update the code directly it would be:
$InsertQuery->bindColumn("Website", "s", "".(!empty($_POST["Website"])? ((strpos(strtolower($_POST["Website"]), "http") !== 0)?"http://".$_POST["Website"]:$_POST["Website"]):"") ."", "WA_DEFAULT");