function navigateToHtml(page, directory) {
	var path = (directory != null?directory+"/":"");
	
    var iframe = parent.document.getElementById("contentIframe");
	iframe.src = path + page + ".html";
	
}

function navigateToPhp(page, directory) {
	var path = (directory != null?directory+"/":"");
	
    var iframe = parent.document.getElementById("contentIframe");
	iframe.src = path + page + ".php";
	
}

function navigateToXml(page) {
	var iframe = parent.document.getElementById("contentIframe");
	iframe.src = page + ".xml";
}

function navigateToSubHtml(directory, page, iframeSrc) {
	var parentFrame = parent.document.getElementById("contentIframe");
	
	var parentDoc = parentFrame.contentWindow || parentFrame.contentDocument;
    if (parentDoc.document) {
    	parentDoc = parentDoc.document;
    }

	var iframe =  parentDoc.getElementById(iframeSrc);
	iframe.src = page + ".html";
}