<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <script> function huan() { var a = document.getElementById("qq"); if(a.src=="file:///E:/1127授课内容/HTML/1225/1.gif") { a.src="file:///E:/1127授课内容/HTML/1225/2.gif"; } else { a.src="file:///E:/1127授课内容/HTML/1225/1.gif"; } } </script> </head> <body> <img src="1.gif" id="qq" onmouseout="huan()" /> </body> </html>