function openwin(url,name) {
  var height = 600;
  var width = 800;
  var str = "height=" + height + ",innerHeight=" + height;
  str += ",width=" + width + ",innerWidth=" + width;
  if (window.screen) {
    var ah = screen.availHeight - 30;
    var aw = screen.availWidth - 10;
    var xc = Math.floor((aw - width) / 2);
    var yc = Math.floor((ah - height) / 2);
    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;
  }
  str += ",directories=0,location=0,menubar=1,personalbar=1,scrollbars=1,status=1,toolbar=1";
  return window.open(url,name,str);
}

function Form_Validatore(theForm)
		{
		//---------------------------------------------------------------------
		
			if (theForm.jmeno_prijmeni.value == "")
			{
				alert("Jméno musí být ...");
				theForm.jmeno_prijmeni.focus();
				return (false);
			}
			
			
		return (true);
		}