var preloadFlag = true;

function changeImages()
{

	if (document.images && (preloadFlag == true))
    {
		for (var i=0; i<changeImages.arguments.length; i+=3)
        {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
			
			if (document.getElementById && document.getElementById('txtCTMain'))
                document.getElementById('txtCTMain').innerHTML = changeImages.arguments[i+2];
            else if (document.all && document.all['txtCTMain'])
                document.all['txtCTMain'].innerHTML = changeImages.arguments[i+2];
		}
	}
}