密码框显示提示文字
<html><head><title>登录</title><script type="text/javascript" src="./jquery-1.3.2.min.js"></script><script>$(document).ready(function(){$(".text_login").focus(function(){if($(this).val()=='user name' || $(this).val()=='password'){$(this).val('');}if($(this).attr('id')=='password1'){$(this).hide();$('#password2').show();$('#password2').focus();}});$(".text_login").blur(function(){if($(this).attr('id')=='password2' && $(this).val()==''){$(this).hide();$('#password1').show();$('#password1').val('password');}else if($(this).attr('id')=='uname' && $(this).val()=='' ){$(this).val('user name');}});});</script></head><body><table cellpadding="0" cellspacing="0" class="tb_login" border="0"> <tr> <td> 账号：</td><td> <input type="text" name="uname" value="user name" id="uname" class="text_login"/> </td> </tr><tr> <td> 密码：</td> <td><input type="text" value="password" id="password1" class="text_login"/><input type="password" id="password2" style="display:none;" class="text_login"/></td> </tr> </table></body></html>