function okno(nazev,w,h)	{	//otevri okno o velikost w,h
	var w=window.open(nazev,"_blank","width="+w+",height="+h+",menubar=no,top=110,left=40");
	if (w) {
		w.focus();
		return true;
	}
	else return false;
}

function getHomepage() {
	if (navigator.appName != 'Netscape')
	  {
		document.body.style.behavior='url(#default#homepage)';
		document.body.setHomePage('http://www.prevodniknorem.cz/'); 
		return false;
		}
	else return true; 
}	
	
//pridani do oblibenych ve Firefoxu
function addTab(sbTitle,sbLoc) {
    // hack: bc 2002-01-04 work around http://bugzilla.mozilla.org/show_bug.cgi?id=99808
    window.onerror = function()
    {
      alert('Nastala chyba během instalace.');
    };
    if ((typeof(window.sidebar) == 'object') && (typeof(window.sidebar.addPanel) == 'function'))
        window.sidebar.addPanel (sbTitle,sbLoc,'');
} 

function clearInput(idecko) {
  var el=document.getElementById(idecko);
  el.value="";
  el.style.color="#000000";
}