source: trunk/phpgwapi/js/htmlarea/plugins/UploadImage/popups/popup.js @ 2

function __dlg_onclose() {
        if (!document.all) {
                opener.Dialog._return(null);
        }
};

function __dlg_init() {

        if (!document.all) {
                // init dialogArguments, as IE gets it
                window.dialogArguments = opener.Dialog._arguments;
                window.sizeToContent();
                window.sizeToContent(); // for reasons beyond understanding,
                                        // only if we call it twice we get the
                                        // correct size.
                window.addEventListener("unload", __dlg_onclose, true);
                /*
                // center on parent
                var px1 = opener.screenX;
                var px2 = opener.screenX + opener.outerWidth;
                var py1 = opener.screenY;
                var py2 = opener.screenY + opener.outerHeight;
                var x = (px2 - px1 - window.outerWidth) / 2;
                var y = (py2 - py1 - window.outerHeight) / 2; */

                //centre on screen instead

                var x = (screen.width - window.outerWidth) / 2;
                var y = (screen.height - window.outerHeight) / 2;

                window.moveTo(x, y);
                var body = document.body;
                window.innerHeight = body.offsetHeight;
                window.innerWidth = body.offsetWidth;
        } else {
                var body = document.body;
                window.dialogHeight = body.offsetHeight + 50 + "px";
                window.dialogWidth = body.offsetWidth + "px";
        }
};

// closes the dialog and passes the return info upper.
function __dlg_close(val) {
        if (document.all) {     // IE
                window.returnValue = val;
        } else {
                opener.Dialog._return(val);
        }
        window.close();
};