function clearField(obj) {
	try {
		if(obj.value == obj.defaultValue)
			obj.value = '';
	} catch(e) {}
}

function redirect(url) {
	location.replace(url);
}

function switchTexts(obj) {
	if(obj.name == "fsk") {
		if(obj.value == "12") {
			document.getElementById('text2').style.display = "block";
			document.getElementById('text1').style.display = "none";
		} else {
			document.getElementById('text1').style.display = "block";
			document.getElementById('text2').style.display = "none";
		}
	} else if(obj.name == "size") {
		if(obj.value != "01" && obj.value != "02" && obj.value != "03" && obj.value != "04") {
			document.getElementById('textBox').style.display = "none";
		} else {
			document.getElementById('textBox').style.display = "block";
			if(document.getElementById('fsk').value == "12") {
				document.getElementById('text2').style.display = "block";
				document.getElementById('text1').style.display = "none";
			} else {
				document.getElementById('text1').style.display = "block";
				document.getElementById('text2').style.display = "none";
			}
		}
	}
}

function closeLightbox() {
	document.getElementById('overlayContent').style.display = 'none'; 
	document.getElementById('overlay').style.display = 'none';
}

function hiddeShowHelp() {
	if(document.getElementById('helpBox').style.display == 'none')
		document.getElementById('helpBox').style.display = 'block';
	else
		document.getElementById('helpBox').style.display = 'none';
}