Untitled

<html>
<head></head>
<body>

	<script>
		function getRandomColor()
		{
			var letters = '0123456789ABCDEF';
			var color = '#';
			for(var i = 0; i < 6; i++)
			{
				color += letters[Math.floor(Math.random() * 16)];
			}
			return color;
		}

		function setRandomColor()
		{
			$("#color").css("color", getRandomColor());
		}

		function changeColor(id)
		{
			document.getElementById(id).style.color=getRandomColor();
		}

		function resize(elem, percent)
		{
		elem.style.fontSize = percent;
		}
		</script>

		<div id="tekst" onclick="changeColor('tekst');" onmouseover="resize(this, '300%')" onmouseout="resize(this, '100%')">
		Zmiana koloru przez javascript
		</div>

</body>
</html>