How to remove url and page number from header and footer using print button

<script language="javascript">
function printDiv(divName) {
var printContents = document.getElementById(divName).innerHTML;
var originalContents = document.body.innerHTML;
document.getElementById('header').style.display = 'none';
document.getElementById('footer').style.display = 'none';
document.body.innerHTML = printContents;

window.print();


document.body.innerHTML = originalContents;
}

</script>
<div id="div_print">
<div id="header" style="background-color:White;"></div>
<div id="footer" style="background-color:White;"></div>
</div>
This is called Solution .