if (typeof(sortpanelObject) == 'undefined') 
{
    sortpanelObject = function(objectName)
    {
        this.objectName   = objectName;
    }
}
sortpanelObject.prototype.init = function()
{
	var currentObject = this;		
   $('select[@name="ddlSortOrder_' + this.objectName + '"]').change(function() {
       $('select[@name="ddlSortOrder_' + currentObject.objectName + '"]').val($(this).val()).parents('form').submit();
   });
}