window.open() on a multi-monitor/dual-monitor system - where does window pop up?

Question

When using javascript window.open() on a multi-monitor system, how do you control which monitor, or where in the display space the popup opens? It seems out of control to me

Answer 1

FUNCTION:

function PopupCenter(url, title, w, h, opts) {
   var _innerOpts = '';
   if(opts !== null && typeof opts === 'object' ){
       for (var p in opts ) {
           if (opts.hasOwnProperty(p)) {
               _innerOpts += p + '=' + opts[p] + ',';
           }
       }
   }
     // Fixes dual-screen position, Most browsers, Firefox
   var dualScreenLeft = window.screenLeft != undefined ? window.screenLeft : screen.left;
   var dualScreenTop = window.screenTop != undefined ? window.screenTop : screen.top;

   var width = window.innerWidth ? window.innerWidth : document.documentElement.clientWidth ? document.documentElement.clientWidth : screen.width;
   var height = window.innerHeight ? window.innerHeight : document.documentElement.clientHeight ? document.documentElement.clientHeight : screen.height;

   var left = ((width / 2) - (w / 2)) + dualScreenLeft;
   var top = ((height / 2) - (h / 2)) + dualScreenTop;
   var newWindow = window.open(url, title, _innerOpts + ' width=' + w + ', height=' + h + ', top=' + top + ', left=' + left);

// Puts focus on the newWindow
   if (window.focus) {
       newWindow.focus();
   }
}

USAGE:

PopupCenter('http://www.google.com','google.com','900','500', {toolbar:1, resizable:1, location:1, menubar:1, status:1}); 

It will also work on minimized windows