Please extend the 'maskedbox' filter before using it.
$.extend($.fn.datagrid.defaults.filters, {
maskedbox: {
init: function(container, options){
var input = $('<input>').appendTo(container);
input.maskedbox(options);
return input;
},
getValue: function(target){
return $(target).maskedbox('getValue');
},
setValue: function(target, value){
$(target).maskedbox('setValue', value);
},
resize: function(target, width){
$(target).maskedbox('resize', width);
}
}
})