var data = [{"name":"Cha-Am","id":"496"},{"name":"Hua Hin","id":"7466"}];
data.setup = function() {
    var wrapper = $('filterwrap');
    if ( wrapper != null ) { 
        var drop = document.createElement( 'SELECT' );
        drop.name = 'filter_resortid';
        drop.className = 'filter_resortid';
        wrapper.appendChild( drop );
        drop.options[drop.options.length] = new Option( 'Any', 0 );
        for ( var i =0,o; o = data[i]; i++ ) {
            drop.options[drop.options.length] = new Option( o.name, o.id );
        }
        wrapper.style.display = 'block';
    }
    data.setup = null;
}
document.observe("dom:loaded", data.setup);