open new window in java script
<script type="text/javascript"> var windowObjectReference = null; // global variable function openRequestedPopup(url, windowName) { if(windowObjectReference == null || windowObjectReference.closed) { windowObjectReference = window.open(url, windowName, "resizable,scrollbars,status"); } else { windowObjectReference.focus(); }; } </script> (...) <p><a href="http://www.spreadfirefox.com/" target="PromoteFirefoxWindow" onclick="openRequestedPopup(this.href, this.target); return false;" title="This link will create a new window or will re-use an already opened one" >Promote Firefox adoption</a></p>