You can try monitoring the .html() of the tag to see if it changes to anything else...
Maybe have a timed function (executing every n-seconds) that monitors the content (.html()) of the element until it changes and then stops monitoring it. Maybe something in the vein of:
var monitor = true;
var doMonitor = function() {
monitor = $("#theanchor").html() != "the initial value";
if (monitor)
setTimeout(doMonitor,500);
};
setTimeout(doMonitor,500);
In theory this should work, but I haven't tested it.