HTML/CSS/CSS Attributes and Javascript Style Properties/clip
"clip" Example
<source lang="html4strict">
<html> <body> <img id="myImg"
src="http://www.wbex.ru/style/logo.png" height="80" width="120" border="0" style="position:absolute;top:200px;left:375px">
<button onclick="myImg.style.clip="rect(25px auto auto auto)""> Applying top value </button> <button onclick="myImg.style.clip="rect(auto 100px auto auto)""> Applying right value </button> <button onclick="myImg.style.clip="rect(auto auto 60px auto)""> Applying bottom value </button> <button onclick="myImg.style.clip="rect(auto auto auto 50px)""> Applying left value </button> <button style="position:absolute;top:250px;left:450px" onclick="myImg.style.clip="rect(auto)"">Restore image</button>
</body> </html>
</source>