function checkRegister1() { // kontrola formulara regform1 1 cast
	var res = true;
	var tu = document.registerForm1;

	if (tu.elements[0].value.length == 0) {
		window.alert("Nezadali ste prihlasovacie meno!");
		res = false;
	}
	if (tu.elements[1].value != tu.elements[2].value) {
		window.alert("Zadané heslá sa nezhodujú!");
		res = false;
	}
	if (tu.elements[1].value.length < 4) {
		window.alert("Heslo musí mať aspoň 4 znaky!");
		res = false;
	}
	return res;
}

function checkRegister2() { // kontrola registracneho formulara
	var res = true;
	if (document.registerForm2.elements[0].value.length == 0) {
		res = false;	
	}
	if (document.registerForm2.elements[1].value.length == 0) {
		res = false;	
	}
	if (document.registerForm2.elements[2].value.length == 0) {
		res = false;	
	}
	if (document.registerForm2.elements[3].value.length == 0) {
		res = false;	
	}
	if (document.registerForm2.elements[4].value.length == 0) {
		res = false;	
	}
	if (document.registerForm2.elements[23].value.indexOf('@') <= 0) {
		res = false;
		window.alert("Zlý e-mail");
	}
	if (res == false) {
		window.alert("Nesprávne vyplnený formulár! Vyplnte všetky polia s hviezdičkou!");	
	}
	return res;
}

function checkNastavenia1() { // kontrola formulara Moje nastavenie 1 cast
	var res = true;
	var tu = document.nastaveniaForm1;

	if (tu.elements[0].value.length == 0) {
		res = false;
	}
	if (tu.elements[1].value != tu.elements[2].value) {
		window.alert("Zadané heslá sa nezhodujú!");
		res = false;
	}
	if (tu.elements[1].value.length < 4) {
		window.alert("Heslo musí mať aspoň 4 znaky!");
		res = false;
	}
	return res;
}

function checkNastavenia2() { //  kontrola formulara Moje nastavenie 2 cast
	var res = true;
	var tu = document.nastaveniaForm2;
	if (tu.elements[0].value.length == 0) {
		res = false;	
	}
	if (tu.elements[1].value.length == 0) {
		res = false;	
	}
	if (tu.elements[2].value.length == 0) {
		res = false;	
	}
	if (tu.elements[3].value.length == 0) {
		res = false;	
	}
	if (tu.elements[4].value.length == 0) {
		res = false;	
	}
	if (tu.elements[23].value.indexOf('@') <= 0) {
		res = false;
		window.alert("Zlý mail");
	}
	if (res == false) {
		window.alert("Nesprávne vyplnený formulár!");	
	}
	return res;
}
/*
function zmenPozadie() {
	var poz1 = document.getElementById("prihlaseniePas");
	var poz2 = document.getElementById("hlavnyPas");
	
	var rand_no = Math.floor(20*Math.random())+1;
	
	poz1.style.backgroundImage = "url(gfx/grafika/bg-prihlasenie" + rand_no + ".jpg)";
	poz2.style.backgroundImage = "url(gfx/grafika/bg-hlavny" + rand_no + ".jpg)";
}
*/
function zmenPozadie(cislo) {
	var poz1 = document.getElementById("prihlaseniePas");
	var poz2 = document.getElementById("hlavnyPas");
	
	poz1.style.backgroundImage = "url(gfx/grafika/bg-prihlasenie" + cislo + ".jpg)";
	poz2.style.backgroundImage = "url(gfx/grafika/bg-hlavny.jpg)";
}

var status = null;

function OpenWindow_H(url) {
	status = window.open(url,"reference",',toolbar=0,location=0,scrollbars=0,width=550,height=420,resizable=0,top=20,left=20');
}

function OpenWindow(url) {
	status = window.open(url,"reference",',toolbar=0,location=0,scrollbars=0,width=320,height=420,resizable=0,top=20,left=20');
}

function OpenWindow_X(url) {
	status = window.open( url,"reference",',toolbar=0,location=0,scrollbars=0,width=620,height=620,resizable=0,top=20,left=20');
}

function PopClose() {
	if (status != null && status.open) status.close();
}
window.onfocus=PopClose;