function NaviGateServer_Start(params)
{
  var url='http://mapy.navigate.cz/webserver/index.php';
  if(params!='') url=url+'?'+params;
  var leftVal= 20;
  var topVal = 20; 
  var width = 765;
  var height = 590;
  if(screen)
  {
    leftVal= (screen.width-width) / 2;
    topVal = (screen.height-height) / 2 - 20;
  }
	var options = 'left='+leftVal+',top='+topVal+',width='+width+',height='+height+',toolbar=no,location=no,border=no,directories=no,status=no,menubar=no,resizable=no,scrollbars=no';
	if (url != '') {
		var w=window.open(url,"NGWEBSERVER",options);
		if((w)&&(w.focus)) w.focus();
	}
}