IE= null;
NS= null;

ua = navigator.appName.toLowerCase();

if(ua.indexOf('explorer')>-1 && document.getElementById && document.childNodes) {IE=true;}
if(ua.indexOf('netscape')>-1 && document.getElementById && document.childNodes) {NS=true;}



// zmeni kurzor
function changeCursor(obj,onoff) {
if (IE==true) {
    if (onoff==1) { obj.style.cursor='hand'; }
        else { obj.style.cursor='auto'; }
    }
    else {
    if (onoff==1) { obj.style.cursor='pointer'; }
       else { obj.style.cursor='auto'; }
    }
 return(true);   
}


// zvyrazni radek tabulky, parametry jsou 'this' a druhy je 0/1 jestli zapnout/vypnout
function zR(co,jak) { 
    if (jak==1)  { 
        changeCursor(co,1);
        co.style.color="#6E767F";
    } else {
        changeCursor(co,0);
        co.style.color="#000000";
    }
}

// oznaci vsechny polocky selectu
function sel_all(co) {
	list = document.getElementById(co);
	for (i=0;i<list.length;i++) {
		list[i].selected = true;
	}
	return false;
}

/*
//obsluhuje menu
function menu(kdo) {
 menu_item = ["skryt1","skryt2","skryt3"];
 co = document.getElementById(kdo);

 for (i=0;i<3;i++) {
	if (menu_item[i] == kdo) {
		co.style.display = "block";
	}
	else {
		document.getElementById(menu_item[i]).style.display = "none";
	}
 }
}

//ukazuje ruzne casti formulare
function ukaz(kdo) {
 co = document.getElementById(kdo);
 co.style.display = "block";
}

//skryva ruzne casti formulare
function skryj(kdo) {
 co = document.getElementById(kdo);
 co.style.display = "none";
}

//skryje jeden blok a ukaze jiny
function multiple(kdo,kdo1) {
 co = document.getElementById(kdo);
 co1= document.getElementById(kdo1);
 
 if (co.style.display == "none") { co.style.display = "block"; co1.style.display = "none";}
 else { co.style.display = "none"; co1.style.display = "block";}
}

//skryva a ukazuje textfield
function ukazCheck(kdo) {
 co = document.getElementById(kdo);
 if (co.style.display == "none") { co.style.display = "block"; } 
 else { co.style.display = "none" };
}

*/