// preload obrazkov

pic1 = new Image(); 
pic1.src = "img/skola-v-prirode-huty-up.gif";
pic2 = new Image(); 
pic2.src = "img/okolie-up.gif";
pic3 = new Image(); 
pic3.src = "img/fotogaleria-up.gif";
pic4 = new Image(); 
pic4.src = "img/forum-up.gif";
pic5 = new Image(); 
pic5.src = "img/objednavka-up.gif";
pic6 = new Image(); 
pic6.src = "img/kontakt-up.gif";
pic7 = new Image(); 
pic7.src = "img/ubytovanie-up.gif";
pic8 = new Image(); 
pic8.src = "img/cennik-up.gif";

// centrovanie
function center_t(h){
	t=(screen.height-h)/2;
	return t;
}
function center_l(w){
	l=(screen.width-w)/2;
	return l;
}

// rezervacia
function form_check(){
	if(document.forms[0].meno.value==""){
		alert("Prosím, vyplňte Vaše meno!");
	}else{
		if(document.forms[0].mesto.value==""){
			alert("Prosím, zadajte mesto!");
		}else{
			if(document.forms[0].telefon.value==""){
				alert("Prosím, zadajte Vaše telefónne číslo!");
			}else{
				document.forms[0].submit();
			}
		}
	}
}

// forum
function form_check2(){
	if(document.forms[0].meno.value==""){
		alert("Prosím, vyplňte Vaše meno!");
	}else{
		if(document.forms[0].prispevok.value==""){
			alert("Prosím, vyplňte text príspevku!");
		}else{
			document.forms[0].submit();
		}
	}
}