function pageLoad(sender, args)
{
    //amplia();
    if (!args.get_isPartialLoad())
    {
        Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(OnBeginRequest);
    }
}

function OnBeginRequest(sender, args) 
{
    args.get_request().get_headers()["Content-Type"] = "application/x-www-form-urlencoded; charset=utf-8";
}


function amplia()
{ 
    resizeTo(screen.width, screen.height) 
    moveTo(0, 0); 
}