script issues with form parameters

[mutago]

<script>

var serviceURL = "http://localhost/db/";

var employees;
var uname;

$('#employeeListPage').bind('pageinit', function(event) {
getEmployeeList();
});
var uname=$("#uname").val();
function getEmployeeList() {


$.getJSON(serviceURL + 'employees.php',

function(data) {

$('#employeeList li').remove();
employees = data.items;
$.each(employees, function(index, employee) {

$('#employeeList').append('<li><font color=white size=2>' + employee.name + '</font><br></li>'

});
$('#employeeList').listview('refresh');
});
}
</script>



I used the above code to retrieve data from database.

but when i want to retrieve data from database via Uname variable by adding this ($.getJSON(serviceURL + 'employees.php?uname='+uname, ) Nothing seems to work any help