Use JavaScript to Scale an Image According to Window Size Sometimes you need to resize an image according to the window's size. You can do this by setting the image width and height as 100 percent inside the <img> tag. IE then resizes the image according to the window's size.

You can also do this with JavaScript, using document.body.clientWidth and document.body.clientHeight. These return the active window width and height. On_Load sets the image width and height. When the window is resized, width.history.go(0) refreshes the page.