$.dialog({
title: ‘温馨提示‘,
content: ‘url:a.aspx‘,
close: function () {
window.location.href = "b.aspx";
},
lock: true,
background: ‘#000‘, /* 背景色 */
opacity: 0.5,
height: ‘260px‘,
width: ‘560px‘
});
原文：http://www.cnblogs.com/lwy1103/p/5498643.html