var ns4 = document.layers;
var op5 = (navigator.userAgent.indexOf("Opera 5")!=-1) 
	||(navigator.userAgent.indexOf("Opera/5")!=-1);
var op6 = (navigator.userAgent.indexOf("Opera 6")!=-1) 
	||(navigator.userAgent.indexOf("Opera/6")!=-1);
var agt=navigator.userAgent.toLowerCase();
var mac = (agt.indexOf("mac")!=-1);
var ie = (agt.indexOf("msie") != -1); 
var mac_ie = mac && ie;


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.href && anchor.rel == "external") {
     anchor.target = "_blank";
   }
 }
}
window.onload = externalLinks;

function buildemail(p,a) {
document.write("<a href='&#109;a&#105;l&#116;o:"+ p +"&#064;"+ a +"'>"+ p +"&#064;"+ a +"</a>");
}

function toggle(menu) {
if (document.getElementById('menu'+menu).style.display=='none') {
		document.getElementById('menu'+menu).style.display='block';
	}
	else {
		document.getElementById('menu'+menu).style.display='none';
	}
}