I am adding onchange event dynamically using Jqery.. When I am changing the textbox the event is firing twice and two times alert boxes are coming sometimes 3 times.

if(Country.toUpperCase().indexOf("MALAYSIA")!=-1)
{    debugger;
    if(productDesc.toUpperCase().indexOf("SV")!=-1)
    {                   
        $("#<%=txtlAxis.ClientID%>").change(function()
        {         
                if(productDesc.toUpperCase().indexOf("SV")!=-1)
                {                           
                alert('2');
                }
        });  
    }
}