function do_createIframe() {
	
	fr1 = document.createElement("IFRAME");
	fr1.setAttribute("src", "http://masamuda.com/navigation_iframe.php"); /*Set the source of the IFrame*/
	fr1.setAttribute("name", "iframe_name2"); /*Set a name for the IFrame for easy access*/
	fr1.setAttribute('scrolling', 'no');
	fr1.frameBorder = 0;
	fr1.style.width = 100+"%";
	fr1.style.height = 31+"px"; /*Set height and width*/
	fr1.setAttribute('id', 'navigation2');
	document.body.appendChild(fr1); /*push it into the document*/
}