Forum Moderators: not2easy
An alternative is something generic using the power of css. My very basic example follows:
css:
html, body {
width: 100%;
height: 100%;
padding: 0;
margin: 0;
}
#header {
width: 100%;
height: 20%;
}
#header img {
width: 100%;
height: 100%;
}
<div id="header">
<img src="your-image.gif" />
</div>
Make your height an appropriate percentage for your particular image. Now it doesn't matter what the viewers screen rez is, it will display as designed, and require only one image.
The only time this method falters is if your original image is so small that resizing causes distortion or blurring.