why this code window.open('url','width=600,height=600,scrollbars=Yes,resizable=no') does not work in my zoho widget but works in browser

why this code window.open('url','width=600,height=600,scrollbars=Yes,resizable=no') does not work in my zoho widget but works in browser

So my question is why above code  does not work  in my zoho widget but works in the browser