问题描述
自从我进行了严肃的网络开发以来已经有一段时间了。现在我遇到了一系列我不熟悉的全新问题..
It's been a while since I did serious web development. Now I meet a host of brand new problems I'm no longer familiar with..
我的网页上有各种图标的.png图像。我发现每当我编辑这些图像时，它们就会停止在IE8中的页面内工作。也就是说，它们（通常）在我第一次打开页面时显示OK，然后在刷新时被占位符图标替换。有时，一些图标显示，而其他图标显示相同的src，不会。
I have some .png images for various icons in my web page. What I find is that whenever I edit these images, they stop working inside a page in IE8. That is, they (usually) display OK when I first open the page, then are replaced by the placeholder icon on refresh. Sometimes, some of the icons display and others, with the same src, don't.
我的图像标记没什么特别的，通常是：
My image tags are nothing fancy, typically:
<img src="images/misc/smallreport.png" alt="Report" />
当我右键单击页面中的图标并选择属性，协议，类型，地址时和大小显示为不可用，尺寸不正确（占位符的大小，我打赌）。
When I right-click an icon in the page and select "properties", protocol, type, address and size are shown as "Not Available", and dimensions are incorrect (size of the placeholder, I bet).
如果我直接在IE中打开图像（即。不在页面内），它们工作正常。
If I open the images directly in IE (ie. not within the page), they work just fine.
我使用Paint.NET编辑图像，但也尝试用Paint保存它们。
I have used Paint.NET to edit the images, but have also tried saving them with Paint.
现在，我正在硬盘上工作（即不通过网络服务器）。而且，哦，是的，这一切都不会发生在谷歌浏览器中。
Right now, I am working right off the hard disk (ie. not through a web server). And, oh yes, none of this happens in Google Chrome.
这里发生了什么？
推荐答案
好吧，我们每天都学到新的东西..
Well, we learn something new every day..
我提到我直接在硬盘上运行它？现在，事实证明，html页面（我从同事那里得到的）被阻止以帮助保护我的计算机，就像Windows一样。
I mentioned that I'm running this directly off the harddisk? Now, it turns out the html page (which I had gotten off a coworker) was blocked "to help protect my computer", as Windows does.
这不大令我惊讶的是，我正在使用的很多文件来自其他计算机，我通常不会担心它（除了可执行文件，在解除阻塞之前不会运行）。
This is no big surprise, lots of files I'm working with originate on other computers, and I usually don't worry much about it (except with executables, which won't run until unblocked).
然而，似乎当IE8加载这样一个被阻止的HTML文件时，它的安全设置会以某种方式进行调整，而且 - 我只能猜测细节，但只要我右键单击HTML文件，就会选中属性并单击解除阻止按钮，问题就消失了。
It seems, however, that when IE8 loads such a blocked HTML file, its security settings adjust somehow, and - well, I can only guess at the details, but as soon as I right-clicked the HTML file, selected Properties and clicked the "unblock" button, the problem went away.
这篇关于.png图像仅在IE8中显示，但不在页面内显示的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！