innerText




=== Hello1.html ===
<html>
<head>
	<title>Hello1</title>
	<style>
		body { 
			width:130;
			height:50;
			background: url('Background.jpg');
			padding-top: 5px;
		}
	</style>

	<script>
		var variableName = "ProgramFiles";
		function setContentText() {
			gadgetContent.innerText = System.Environment.getEnvironmentVariable(variableName);
			}
	</script>
</head>
<body onload="setContentText()">
	<span id="gadgetContent" style="font-family: Tahoma; font-size: 8pt'">Hello1</span>
	</body>
	</html>
setContentText() { gadgetContent.innerText onload="setContentText()"> id="gadgetContent"