function bgInputInit(formId, options)
{
    var form = $('#' + formId);
    if (typeof options.elements == 'object' && options.elements != null && $(form).size() == 1) {
        for (var element in options.elements) {
            var selector = '[name="' + bgInputEscape(element) + '"]';
            $(selector, form).attr('emptybg', options.elements[element].background);
            $(selector, form).focus(function() { bgImageUpdate.call(this, 'focus'); });
            $(selector, form).blur(function() { bgImageUpdate.call(this, 'blur'); });
            $(selector, form).each(function(){
                bgImageUpdate.call(this, 'blur');
                this.style.backgroundRepeat = 'no-repeat';
            });
        }
    }
    return true;
}

function bgInputEscape(name)
{
    //name = name.replace('[', '\\[');
    //name = name.replace(']', '\\]');
    name = name.replace(':', '\\:');
    name = name.replace("'", "\\'");
    name = name.replace('"', '\\"');
    return name;
}

function bgImageUpdate(func)
{
    if (func == 'focus') {
        this.style.backgroundImage = '';
    } else if (func == 'blur'){
        if (this.value == '') {
            this.style.backgroundImage = "url('" + $(this).attr('emptybg') + "')";
        } else {
            this.style.backgroundImage = '';
        }
    }
}