JavaScript DHTML/Node Operation/removeRule
"removeRule()" Example
<html>
<body>
<style>.myClass {background-color:red; font-decoration:bold;}</style>
<script language="JavaScript">
function function1() {
document.styleSheets[0].removeRule(0);
}
</script>
<button onclick="function1();" class="myClass">Remove rule</button>
</body>
</html>