Ajax does not seem to work

Hi,

Can't seem to load any data from my php page into my edge animate.

Here is my code:

.ajax({ url: 'http://server-x:7890/db.php',

  dataType: 'json',

  success: function(data)

  { sym.$("Output1").html(data);

  }

});

so I tried to debug it by changing it to

.ajax({ url: 'http://server-x:7890/db.php',

  dataType: 'json',

  success: function(data)

  { sym.$("Output1").html("Help");

  }

});

And getting nothing. I can write successfully with sym.$("Output1").html("Help") outside Ajax function.

My db.php works successfully and  returns

"Ajax." -- in my crome browser

Anyone know what could be wrong?