pick AJAX URL and location.hash from the action attribute of the search form
pick AJAX URL and location.hash from the action attribute of the search form

Using empty string in `jQuery.post` can cause few browsers to misbehave.  For
example, the following exception was thrown by an old version of Firefox:

    "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE)
    [nsIXMLHttpRequest.open]"  nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)"

Thanks to Jonna Katharina Kulmuni for reporting this.

Signed-off-by: Anurag Priyam <6e6ab5ea9cb59fe7c35d2a1fc74443577eb60635@gmail.com>

aldermossy/sequenceserver,deepakunni3/sequenceserver,aldermossy/sequenceserver,yeban/sequenceserver,lepbase/lepbase-sequenceserver,IsmailM/sequenceserver,aldermossy/sequenceserver,IsmailM/sequenceserver,lepbase/lepbase-sequenceserver,vivekiitkgp/sequenceserver,jasminZ/sequenceserver,IsmailM/sequenceserver,yeban/sequenceserver,aldermossy/sequenceserver,elsiklab/sequenceserver,vivekiitkgp/sequenceserver,jasminZ/sequenceserver,yeban/sequenceserver,deepakunni3/sequenceserver,deepakunni3/sequenceserver,elsiklab/sequenceserver,yeban/sequenceserver,lepbase/lepbase-sequenceserver,vivekiitkgp/sequenceserver,jasminZ/sequenceserver,elsiklab/sequenceserver