// JavaScript Document
jQuery.fn.loading = function(parametros) {
	option = jQuery.extend({
		id      : 'divWaiting',
		top     : 0,
		left    : 0,
		width   : 100,
		height  : 100,
		html    : null,
		classe  : null
	}, parametros);

	/* cria elemento caso não exista */
	if ($('.modal-waiting').length <= 0) {
		div = document.createElement('div');
		$(div).addClass('modal-waiting');
		$('body').append(div);
	}

	$('.modal-waiting').attr('id', option.id).css({'top':option.top, 'left':option.left}).width(option.width).height(option.height).html(option.html);
	$('#'+option.id).fadeIn();
};