var username_clicked = false;
function clear_username(inp_obj) {
  if(username_clicked == false) {
    inp_obj.value = "";
    username_clicked = true;
  }
}

var password_clicked = false;
function clear_password(inp_obj) {
  if(password_clicked == false) {
    inp_obj.value = "";
    inp_obj.type = "password";
    password_clicked = true;
  }
}

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

window.onload = externalLinks;