function fotka()
	{
	window.open("","fotka",'toolbar=0,location=0,scrollbars=0,width=680,height=450,resizable=0');
	}

function zkontroluj(formular)
	{
		if (formular.jmeno.value=="")
		{
			alert("Autor?!");
			formular.jmeno.focus();
			return false;
		}
		else if (formular.podnazev.value=="")
		{
			alert("Název?!");
			formular.podnazev.focus();
			return false;
		}
		else if (formular.email.value=="")
		{
			alert("E-mail?!");
			formular.email.focus();
			return false;
		}
		else if (formular.text.value=="")
		{
			alert("Text?!");
			formular.text.focus();
			return false;
		}
		else if (window.RegExp)
		{
			re = new RegExp("^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$");
			if (!re.test(formular.email.value))
			{
				alert("Toto není e-mail!");
				formular.email.focus();
				return false;
			}
		}
		else
			return true;
	}

var rotate_delay = 5000; // delay in milliseconds (5000 = 5 secs)
current = 0;

function next()
	{
		if (document.slideform.slide[current+1])
		{
			document.images.show.src = document.slideform.slide[current+1].value;
			document.slideform.slide.selectedIndex = ++current;
		}
		else first();
	}

function previous()
	{
		if (current-1 >= 0)
		{
			document.images.show.src = document.slideform.slide[current-1].value;
			document.slideform.slide.selectedIndex = --current;
		}
		else last();
	}

function first()
	{
		current = 0;
		document.images.show.src = document.slideform.slide[0].value;
		document.slideform.slide.selectedIndex = 0;
	}

function last()
	{
		current = document.slideform.slide.length-1;
		document.images.show.src = document.slideform.slide[current].value;
		document.slideform.slide.selectedIndex = current;
	}

function ap(text)
	{
		document.slideform.slidebutton.value = (text == "Stop") ? "Start" : "Stop";
		rotate();
	}

function change()
	{
		current = document.slideform.slide.selectedIndex;
		document.images.show.src = document.slideform.slide[current].value;
	}
function rotate()
	{
		if (document.slideform.slidebutton.value == "Stop")
		{
			current = (current == document.slideform.slide.length-1) ? 0 : current+1;
			document.images.show.src = document.slideform.slide[current].value;
			document.slideform.slide.selectedIndex = current;
			window.setTimeout("rotate()", rotate_delay);
		}
	}