Looking For Sizeable Popup That Will Work In Google Chrome

Does anyone have a sizeable popup that will work in google chrome? I have tried several scripts for this with no success, they all open full page. Here is an example of what I am looking for. The problem with this is it opens a new page plus a full page popup

<script type="text/javascript">
<!--
function popup(url) {
var is_chrome;
var width = 1020;
var height = 600;
var left = (screen.width - width)/2;
var top = (screen.height - height)/2;
var params = 'width='+width+', height='+height;
params += ', top='+top+', left='+left;
params += ', directories=no';
params += ', location=no';
params += ', menubar=no';
params += ', resizable=yes';
params += ', scrollbars=yes';
params += ', status=no';
params += ', toolbar=no';
newwin=window.open(url,'windowname5', params);
is_chrome= navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
if (is_chrome) {newwindow.parent.blur();}
if (window.focus) {newwin.focus()}
return false;
}
// -->
</script>

To open I am using:
onclick=popup(mypage.php?id=".$row->id."