webmethod help!

Hi, i'm a Junior .Net Developer!

when I create a webmethod within the codebehind file for the page and I try to call it using PageMethods.SomeFunction() I get a javascript error on stating: PageMethods is undefined. What's going on? Am I possibly missing a line in my web.config file?

everything works on my localhost!

 

heres my javascript code:

CallMe('http://rhealleb.w01.Winhost.com/Text/LaRecette01.txt');

function CallMe(FileName) {
PageMethods.GetLyrics(FileName, CallSuccess, CallFailed);
}

function CallSuccess(res) {
if (res == null || res == "") {
res = "Pas Disponnible";
}

$('#Song-Lyrics').append(res);
}

function CallFailed(res) {
res = "Pas Disponnible";
$('#Song-Lyrics').append(res);
}


and my code behind:

[System.Web.Services.WebMethod]
public static string GetLyrics(string fileName)
{
my code!
}