function hideall() {
	var obj;
	for (var i=1; i<4; i++) {
   		obj = document.getElementById('tea' + i);
		obj.style.display='none';
	}
}

function show (nmbr) {
	hideall();
	var obj = document.getElementById('tea' + nmbr);
	obj.style.display='block';
}

function externalLinks() { 
	if (!document.getElementsByTagName) return; 
	var anchors = document.getElementsByTagName("a"); 
	for (var i=0; i<anchors.length; i++) { 
		var anchor = anchors[i]; 
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") anchor.target = "_blank"; 
	} 
}
window.onload = externalLinks;