function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var RunningIE4 = (msieversion() >=4);

function msieversion() {
	var ua = window.navigator.userAgent
	var msie = ua.indexOf ( "MSIE " )
	if ( msie > 0 )		// is Microsoft Internet Explorer; return version number
		return parseInt ( ua.substring ( msie+5, ua.indexOf ( ".", msie ) ) )
	else
		return 0	// is other browser
}

if (RunningIE4) {
  changePic = switchPic
  } else {
  changePic  = switchPic}

function switchPic(picObj, newSrc) {
  picObj.src = newSrc}