תשימו בראש
<SCRIPT LANGUAGE="JavaScript"> <!-- Idea by: Nic Wolfe (Nic@TimelapseProductions.com) --> <!-- Web URL: https://fineline.xs.mw --> <!-- This script and many more are available free online at --> <!-- The JavaScript Source!! https://javascript.internet.com --> <!-- Begin function popUp() { props=window.open('HTTP://www.yo-yo.up.co.il', 'poppage', 'toolbars=0, scrollbars=0, location=0, statusbars=0, menubars=0, resizable=0, width=800, height=600'); } // End --> </script>

תשימו בגוף <form> <input type=button value="כתוב פה אתכתובת החלון" onClick="javascript:popUp()"> </form>