示例1
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><meta charset="utf-8"><title>页面的过度效果</title></head><body bgcolor="#FFCC00"><center><h2>页面过度效果</h2><img src="images/1.jpg" width="498" height="349" /> <br/><br/><br/><a href="/go.html?url=2-enter.html">进入网页</a><br/><a href="/go.html?url=2-exit.html">离开网页</a></center></body></html>效果：<!DOCTYPE html PUBLIC "-//W3C//DTD XH
