function OpenJSLWindow(url, jmeno, w, h) {
  var type = '';
	//type =(document.form.type.options[document.form.type.selectedIndex].value);

  //Okno = window.open(url + '?type=' + type, jmeno,'resizable=0, scrollbars=1,top=20,left=20,menubar=0,width=' + w + ',height=' + h);
  
  iMyWidth = (window.screen.width / 2) - (w / 2);
  
  Okno = window.open(url, jmeno,'resizable=0, scrollbars=1,top=50,left=' + iMyWidth + ',screenX=' + iMyWidth + ',menubar=1,width=' + w + ',height=' + h);    
  Okno.focus()
}