function addAltText() {
var arcgisTiles = document.querySelectorAll(".layerTile")
for (const i of arcgisTiles) {
i.alt = "base map"
}
var trs = document.getElementsByTagName("td");
for (const i of trs) {
i.alt = "base map"
}
}
document.addEventListener('readystatechange', event => {
// When HTML/DOM elements are ready:
//if (event.target.readyState === "interactive") { //does same as: ..addEventListener("DOMContentLoaded"..
// addAltText();
//}
// When window loaded ( external resources are loaded too- `css`,`src`, etc...)
if (event.target.readyState === "complete") {
addAltText();
}
});
