[jQuery] Problem with URL formatting with $.ajax

[jQuery] Problem with URL formatting with $.ajax


Here is my code:
$.ajax({
        url: lUrl,
        global: true,
        async: false,
        data:{"none":"none"},
        type: "GET",
        dataType: "text",
        success: function(result){
            alert("result is "+result);
            parsedJSON = JSON.parse(data);
        },
        error: function (XMLHttpRequest, textStatus, errorThrown) {
            alert(textStatus);
        }
});
All of my urls that are sent to the server have "?_=(some random
number)". In the specific case of the above code, the generated URL is
"http://url/script.php?_=1254497109001&none=none". How can I prevent
this from happening? Why is it happening?