Why does this JavaScript cause a page to open in a tab for Chrome
<p>Why would these parameters passed to window.open('SomeWinName') open in a tab:</p>

<pre><code>toolbar=1,
location=1,
directories=1,
addressbar=1,
scrollbars=1,
status=1,
menubar=1,
resizable=1,
outerWidth="+x+",
outerHeight="+
</code></pre>

<p>But if I use these params, window opens in a new window:</p>

<pre><code>resizable=1,
outerWidth="+x+",
outerHeight="+y
</code></pre>
