How to print a page in HTML pages?

How to print a page in HTML pages?
<!-- This Script is from studfuture.forumotion.com, Coded by: Gnanaprakash-->
<!-- Print Page Script
Use this script to have your
users print your HTML page
-->
<SCRIPT LANGUAGE="JavaScript">
if (window.print) {
document.write('<form> '
+ '<input type=button name=print value="Click" '
+ 'onClick="javascript:window.print()"> To Print this page!</form>');
}
// End -->
</script>

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