Tryit Editor v1.8

Source Code:
<!DOCTYPE html> <html> <head> <script> function openWin() { myWindow=window.open('','','width=200,height=100'); myWindow.document.write("<p>This is 'myWindow'</p>"); } function moveWin() { myWindow.moveBy(250,250); myWindow.focus(); } </script> </head> <body> <input type="button" value="Open 'myWindow'" onclick="openWin()" /> <br><br> <input type="button" value="Move 'myWindow'" onclick="moveWin()" /> </body> </html>
Result:
W3Schools.com - Try it yourself