window.open('about:blank', '_blank'); code example
Example: javascript open new window
<a onclick="window.open(document.URL, '_blank', 'location=yes,height=570,width=520,scrollbars=yes,status=yes');">
Open New Window
</a><a onclick="window.open(document.URL, '_blank', 'location=yes,height=570,width=520,scrollbars=yes,status=yes');">
Open New Window
</a>