/*	::::: Overlabel with jQuery :::::
	http://scott.sauyet.com/thoughts/archives/2007/03/31/overlabel-with-jquery/
*/

(function($) {
 
    // plugin definition
    $.fn.overlabel = function(options) {
 
        // build main options before element iteration
        var opts = $.extend({}, $.fn.overlabel.defaults, options);
 
        var selection = this.filter('label[for]').map( function() {
 
            var label = $(this);
            var id = label.attr('for');
            var field = document.getElementById(id);
 
            if (!field) return;
 
            // build element specific options
            var o = $.meta ? $.extend({}, opts, label.data()) : opts;
 
            label.addClass(o.label_class);

            var hide_label = function() { label.css(o.hide_css) };
            var show_label = function() { this.value || label.css(o.show_css) };
 
            $(field)
                 .parent().addClass(o.wrapper_class).end()
                 .focus(hide_label).blur(show_label).each(hide_label).each(show_label);
 
            return this;
 
        } );
 
        return opts.filter ? selection : selection.end();
    };
 
    // publicly accessible defaults
    $.fn.overlabel.defaults = {
 
        label_class:	'overlabel-apply',
        wrapper_class:	'overlabel-wrapper',
        hide_css:		{ 'text-indent': '-999em' },
        show_css:		{ 'color': '#999', 'cursor': 'text', 'text-indent': '0' },
        filter:			false
 
    };
 
})(jQuery);