// navigation functions

function dnavOn(navName) {
	if (document.getElementById) {
		if (document.getElementById(navName).className != 'dnav-select') {
			document.getElementById(navName).style.background = '#ede9e6';
		}
	}
}

function dnavOff(navName) {
	if (document.getElementById) {
		if (document.getElementById(navName).className != 'dnav-select') {
			document.getElementById(navName).style.background = '#ffffff';
		}
	}
}


function showMenu(divName) {
	if (document.getElementById) {
		document.getElementById(divName).style.display = 'block';
	}
}

function hideMenu(divName) {
	if (document.getElementById) {
		document.getElementById(divName).style.display = 'none';
	}
}


function setupExternalLinks() {
  var links = document.getElementsByTagName('a');
  for (var i = links.length; i != 0; i--) {
    var a = links[i-1];
    if (!a.href) continue;

    if (a.href.indexOf('http') != -1 &&
            a.href.indexOf(window.location.hostname) == -1 &&
      !excludeUrl(a.href)
        ) {
      a.onclick = function() {
                openExternalLink(this.href, this.target);
                return false;
            }

    }
  }
}

function excludeUrl(url){
  var excludeUrls = Array('http://www.dispronet.com.ar',
'http://www.clubd.com.ar'
              );

  for(var l = 0; l < excludeUrls.length; l++){
    if(url.indexOf(excludeUrls[l]) == 0){
      return true;
    }
  }

  return false;
}