function wwwEncodeObject(o) { 
    var params = new Array(); 
    for (var f in o) {
        var fieldname = escape(f).replace(/\+/g,'%2B');
        var value = o[f];
        switch(typeof(value)) {
        case 'string':
        case 'number':
            params.push(fieldname + "=" + escape(value).replace(/\+/g,'%2B'));
            break;
        case 'boolean':
            params.push(fieldname + (value ? "=1" : "="));
            break;
        case 'object':
	    //Handle arrays logically.  Other objects, die
            if(value.constructor != Array) throw("Can't handle non-Array objects");
            for (var i = 0; i < value.length; i++) 
                params.push(fieldname + "=" + escape(value[i]).replace(/\+/g,'%2B'));
        }
    }
    return params.join('&')
}