Renders an identicon from a string. It's not very good at the moment. It builds upon Caligatio's jsSHA and donpark's identicon - both MIT/BSD, I beleive.

render-identicon-from-string

<canvas title="identicon -2044886870" width="48" height="48"></canvas>
<script type="text/javascript" src="https://raw.github.com/donpark/identicon/master/identicon-canvas/identicon_canvas.js"></script>
<script type="text/javascript" src="https://raw.github.com/Caligatio/jsSHA/master/src/sha1.js"></script>

<script>//override existing render func, to not check for prefix
function render_identicon_canvases(prefix) {
	var canvases = document.getElementsByTagName("canvas");
	var n = canvases.length;
	for (var i = 0; i < n; i++) {
		var node = canvases[i];
		//if (node.title && node.title.indexOf(prefix) == 0) {
			if (node.style.display == 'none') node.style.display = "inline";
			var code = node.title.substring(prefix.length) * 1;
			var size = node.width;
			render_identicon(node, prefix, size);
		//}
	}
}

hashObj = new jsSHA(prompt(), "TEXT"); 
render_identicon_canvases(parseInt(parseInt(hashObj.getHash("SHA-1", "HEX"),16)/100))