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// preloader('make');
// preloader('remove');

function preloader(todo){

	var $layer = $('<div>',{
		class: 'preloader'
	}).append('<span>로딩중 입니다.</span>');

	var $layerbg = $('<div>',{ class: 'preloaderbg' });

	var left = ( $(window).scrollLeft() + ($(window).width() - $layer.width()) / 2 );
	var top = ( $(window).scrollTop() + ($(window).height() - $layer.height()) / 2 );
	var width = ($(document).width())
	var height = ($(document).height());

	switch(todo) {
		case 'remove':
			if ($('div.preloader').length > 0) {
				$('div.preloader, div.preloaderbg').remove();
			}
			break;
		default:
			if ($('div.preloader').length <= 0) {
				$layerbg.css({'width':width,'height':height, 'position':'absolute', 'opacity': 0.5}).appendTo($('body'));
				$layer.css({'left':left,'top':top, 'position':'absolute'}).appendTo($('body'));
			}
	}
}

function loadExample(){
	preloader('make');
	$('#result').load('ajax/test.html', function() {
		preloader('remove');
	});
}