[Deff]

PashPP,

<div id="allvariants">
		<div id="i1">
			текст 1
		</div>
		<div id="i2" onclick="uuu()"> 
			текст 2
		</div>
		<div id="i3">
			текст3
		</div>
		<div id="i4">
			текст 4
		</div>
</div>


<script type="text/javascript">
var numOfButton = document.getElementById('allvariants').querySelectorAll('div')
function uuu() {
	alert(numOfButton[1].innerHTML)
}
uuu()
</script>