Javascript to upload a file to SharePoint 2010 document library

Thanks Kelly. I tried the first method and I am getting object expected error in the first line. Below is the code. Please let me know if I am missing anything.

<input id="uploadDocumentButton" onclick="UploadDocument()" type="button" value="Upload Document"/><script type="text/C#" runat="server">

public Boolean UploadDocument()

{

ClientContext ctx = new ClientContext("mysharepoint URL");

Web currentWeb = ctx.Web;

ctx.Load(currentWeb);

ctx.ExecuteQuery();

using (FileStream fs = new FileStream("C:\KPP.txt", FileMode.Open))

{

Microsoft.SharePoint.Client.File.SaveBinaryDirect(ctx, "/JSOM%20Documents/"+ "KPP.txt", fs, true);

}

Console.WriteLine("Uploaded File Successfully");

}</script>