var weatherObj = document.getElementById("sectnav");
var weatherAnchor = weatherObj.getElementsByTagName("A")[0];
var oldText = weatherAnchor.childNodes[0];var imgW = document.createElement("IMG");	// Creating new img
imgW.src = 'http://www.web.appstate.edu/images/weather/PC.gif';
var newText = document.createTextNode(" 70 F (21 C)");
weatherAnchor.removeChild(oldText);
weatherAnchor.appendChild(imgW);	// Appending <img> to the anchor
weatherAnchor.appendChild(newText);