function print_check(){
print_check = document.getElementById('print_check').innerHTML;
printwin = open('', 'printwin', 'width=800,height=400');
printwin.document.open();
printwin.document.writeln('<html><head><title></title></head><body
onload=print();close()>');
printwin.document.writeln(print_check);
printwin.document.writeln('</body></html>');
printwin.document.close();
}
window.onload = function() {
var print_btn = document.getElementById('print_btn');
print_btn.onclick = print_check;
}

Fix it pls!