Stuff

function stateChanged( xmlHttp, div ) {

	// The value of 'div' checks out fine.. no error there

	// But document.getElementById( div ) doesn't work anymore now that
	// I've put this into this function...

	document.getElementById( div ).innerHTML = "Loading... please wait.";
	if( xmlHttp.readyState == 4 || xmlHttp.readyState == "complete" ) {
		document.getElementById( div ).innerHTML = xmlHttp.responseText;
	}
}