document.addEventListener("DOMContentLoaded", () => {
    function replaceContent(elm, file) {
	if (!elm) return;
	if (!file) return;
	if (file=="") return;
	fetch(file).then((resp) => {
	    return resp.text();
	}).then((text) => {
	    elm.textContent = text;
	});
    }
    for (let elm of document.querySelectorAll(".replace")) {
	replaceContent(elm, elm.getAttribute("file"));
    }
});