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);
}


/// objekt pres ID
/*
var vsechny_object = document.getElementsByTagName("object");
    if(vsechny_object){	  
		  var pocet_object = vsechny_object.length;
		  for (var i=0;i<pocet_object;i++) {
			  new_param = document.createElement('param');
				new_param.setAttribute('name','wmode');
				new_param.setAttribute('value','transparent');
				vsechny_object[i].appendChild(new_param);
		  }
    }

var vsechny_embed = document.getElementsByTagName("embed");      
    if(vsechny_embed){	  
		  var pocet_embed = vsechny_embed.length;
		  for (var i=0;i<pocet_embed;i++) {
			  vsechny_embed[i].wmode = "transparent";
		  }
    }
*/