function activateUsername(element, activate) {
	if(activate == true) {
		if(element.value == "Login") element.value = "";
	}
	if(activate == false) {
		if(element.value == "") element.value = "Login";
	}
}

function activatePassword(element, activate) {
	if(activate == true) {
		if(element.value == "Heslo") element.value = "";
	}
	if(activate == false) {
		if(element.value == "") element.value = "Heslo";
	}
}