javascript实现的登陆遮罩效果
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>遮罩</title>
<style>
#blanks{
display:none;
width:100%;
//height:100%;
