This is my code:

<script language="javascript" type="text/javascript">
function PrintDiv()
{
    var myContentToPrint = document.getElementById("dv01");
    var myWindowToPrint = window.open('','','width=800,height=600,toolbar=0,scrollbars=-1,status=0,resizable=-1,location=0,directories=0');
    myWindowToPrint.document.write(myContentToPrint.innerHTML);
    myWindowToPrint.document.close();
    myWindowToPrint.focus();
    myWindowToPrint.print();
    myWindowToPrint.close();
}
</script> 

How to set printer by javascript and What should I do not to print HTMLPage Title & number of pages by printer?

Try window.print.

Here's a great link for learning more about printing: CSS Design: Going to Print 

vohuman:

How to set printer by javascript

Unfortunately that is not possible. Javascript has not control over the client side machine, all it can do here is display the print dialog screen and the user can then select the printer.