Бесконечно раз отправляется AJAX запрос

function pop(obj)
{
   var lal=$.get("/scripts/script.php",function(data) { $(obj).html($(obj).html()+data); });
}

<script type="text/javascript">
$(document).ready(function()
{
//Components layouting
//$("#var_model_fieldset").height($("#world_interests_rate").height());
$("#var_model_instrument").bind("change",function(event)
{
var selectedInstrument = ($(event.target).val());
jQuery.post("get_var_model.html", {"instrument":selectedInstrument}, handleSuccess, 'json');
function handleSuccess(data)
{
$("#var_model_forecast_origin").html(data.forecast_origin);
$("#var_model_forecast_ending").html(data.end_forecast_origin);
$("#var_model_forecasted_value").html(data.forecasted_value);
$("#var_model_standard_deviation").html(data.standard_deviation+"%");
$("#var_model_upper_bound").html(data.upper);
$("#var_model_lower_bound").html(data.lower);
}
 
});
var varModelRatesColumns = 
[
{"key":"country", "label":"Country"},
{"key":"rate", "label":"Central Bank Rate"},
{"key":"link", "label":"Link to Central Bank"}
];
 
varModelRatesDataSource = new YAHOO.util.DataSource("get_var_model_rates.html"); 
varModelRatesDataSource.responseType = YAHOO.util.DataSource.TYPE_JSARRAY;
varModelRatesDataSource.responseSchema = { 
fields: ["country", "rate", "link"] 
}; 
varModelRatesDataSource.connXhrMode = "queueRequests";
varModelRatesDataSource.connMethodPost = true;
 
varModelRatesTable = new YAHOO.widget.DataTable("world_interests_rate", 
varModelRatesColumns, varModelRatesDataSource, {initialRequest: ''});
 
$("#var_model_instrument").bind("change", handlVarModelInstrumentChange);
function handlVarModelInstrumentChange(event){
$("#var_model_instrument").find("option[value='-1']").remove();
}
});
</script>