<html>
<head>
<style>
#left {float: left;height: 600px;cursor: pointer;}
#gall {float: left;height: 600px;}
#right {float: left;height: 600px;cursor: pointer;}
.button {margin-top: 220px;}
</style>
</head>
<body>
<div id="left">
<img class="button" src="images/lewo.png" alt="blad" height="100" width="100" onclick="lewo()">
</div>
<div id="gall">
<img id="fotki" src="images/dzik1.jpeg" alt="blad" height="600px" width="500px">
</div>
<div id="right">
<img class="button" src="images/prawo.png" alt="blad" height="110" width="100" onclick="prawo()">
</div>
</body>
</html>
<script>
x = 1;
function lewo() {
x += -1;
document.getElementById('fotki').src="images/dzik"+x+".jpeg";
}
function prawo() {
x += 1;
document.getElementById('fotki').src="images/dzik"+x+".jpeg";
}
</script>
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