function track1() {
	createIframe ('track_1', '/track_1.html');
}

function createIframe (iframeName, iframeSrc) {
	var iframe;
	if (document.createElement && (iframe = document.createElement('iframe'))) {
	iframe.name = iframeName;
	iframe.src = iframeSrc;
	iframe.width = 0;
	iframe.height =0;
	document.body.appendChild(iframe);
	}
}