rem: var features = "centerscreen,chrome,resizable=no"; 
add: var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"] .getService(Components.interfaces.nsIWindowMediator); var win = wm.getMostRecentWindow("Browser:MigrationWizard"); if (win) win.focus(); else { window.openDialog("chrome: "migration", "centerscreen,chrome,resizable=no"); } 
context: function BrowserImport(){#ifdef XP_MACOSX  var features = "centerscreen,chrome,resizable=no";#else  var features = "modal,centerscreen,chrome,resizable=no";#endif  window.openDialog("chrome://browser/content/migration/migration.xul", "migration", features);}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/873cd6e5044246487ff465109aedb59d54f1deb8/browser.js/clean/browser/base/content/browser.js