<!DOCTYPE html>
<html>
<head>
</head>
<body>
<label for="file-input" class="file-input-label"></label>
<input type="file" id="file-input" accept=".wexbim" onchange="checkAndLoad()">
<script>
function checkAndLoad() {
if (models.length > 0) {
for (var i = 0; i < models.length; i++) {
viewer.unload(models[i]);
}
models = [];
}
var file = document.getElementById("file-input").files[0];
viewer.loadAsync(file);
viewer.start();
}
</script>
</body>
</html>