foojs.html
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	• bzimport
	Nov 22 2014, 2:34 AM

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foojs.html
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	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>IE 6 CSS Character Equivalence Checker</title>
	<style>s { display: none; }</style>
	</head>
	<body>
	<label>
	HTML template: <input type="text" id="txtHtml" value="<s style="top:expression(1)"></s>" size="80">
	</label><br>
	<label>
	CSS property (lowerCamelCase): <input type="text" id="txtPropName" value="top">
	</label><br>
	<label>
	Bad word: <input type="text" id="txtBadWord" value="expression">
	</label><br>
	<button onclick="startit()">Start</button><br>
	<pre id="preResult"></pre>
	<div id="sandbox"></div>
	<script>

	var txtHtml = document.getElementById('txtHtml'),
	txtPropName = document.getElementById('txtPropName'),
	txtBadWord = document.getElementById('txtBadWord'),
	preResult = document.getElementById('preResult'),
	sandbox = document.getElementById('sandbox'),
	htmlPrefix, htmlSuffix, propName, badWord,
	badChar, fullHtmlPrefix, fullHtmlSuffix, i, cp;

	function startit() {
	badWord = txtBadWord.value;
	propName = txtPropName.value;

	var htmlParts = txtHtml.value.split(badWord);
	htmlPrefix = htmlParts[0];
	htmlSuffix = htmlParts[1];

	preResult.innerHTML = '';
	i = 0;
	cp = 0;
	loopit();
	}

	function loopit() {
	if (cp === 0) {
	badChar = badWord.charAt(i);
	logtext(badChar + ':');
	fullHtmlPrefix = htmlPrefix + badWord.slice(0, i) + '&#';
	fullHtmlSuffix = ';' + badWord.slice(i + 1) + htmlSuffix;
	}

	window.status = '(' + i + ', ' + cp + ')';

	// Try every code point in range, though only a couple hundred at a time.
	for (var minor = 0; cp < 65536 && minor < 256; ++cp, ++minor) {
	var html = fullHtmlPrefix + cp;
	html += fullHtmlSuffix;
	sandbox.innerHTML = html;
	if (sandbox.firstChild && sandbox.firstChild.style[propName] !== '') {
	logtext(' U+' + ('0000' + cp.toString(16)).slice(-4).toUpperCase());
	}
	}

	// After U+FFFF of this letter, check U+0000 of the next.
	if (cp > 65535) {
	logtext('.', true);
	cp = 0;
	i++;
	}

	// If more code points to check, resume after timeout.
	if (i < badWord.length) {
	setTimeout(loopit);
	}
	}

	function logtext(s, endLine) {
	preResult.appendChild(document.createTextNode(s));
	if (endLine) {
	preResult.appendChild(document.createElement('br'));
	}
	}

	</script>
	</body>
	</html>

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