function OpenJSLWindow(url, jmeno, w, h) {
	Fokus = window.open(url, jmeno,'resizable=0,scrollbars=0,top=50,left=50,menubar=0,width=' + w + ',height=' + h);
 	Fokus.focus()
}
function HideElement(id){
  document.getElementById(id).style.display="none";
}

function ShowElement(id){
  document.getElementById(id).style.display="block";
}