FILEUP

F diff --git a/js/validate_hero.js b/js/validate_hero.js
--- a/js/validate_hero.js
+++ b/js/validate_hero.js
  
  function clear_hero_errors()
  {
- 	var errors = document.getElementsByClassName("hero_form_error");
- 	var i;
+ 	let errors = document.getElementsByClassName("hero_form_error");
+ 	let i;
  	for (i = 0; i < errors.length; i++)
  	{
  		errors[i].hidden = true;
  }
  function validate_hero_login_form()
  {
- 			var username=document.forms["hero_form"]["username"].value;
- 			var flag=true;
+ 			let username=document.forms["hero_form"]["username"].value;
+ 			let flag=true;
  			clear_hero_errors();
  
  			if(username.length==0)
  }
  function validate_hero_form()
  {
- 			var username=document.forms["hero_form"]["username"].value;
- 			var email=document.forms["hero_form"]["email"].value;
- 			var password=document.forms["hero_form"]["password"].value;
- 			var password2=document.forms["hero_form"]["password2"].value;
+ 			let username=document.forms["hero_form"]["username"].value;
+ 			let email=document.forms["hero_form"]["email"].value;
+ 			let password=document.forms["hero_form"]["password"].value;
+ 			let password2=document.forms["hero_form"]["password2"].value;
  
- 			var flag=true;
+ 			let flag=true;
  			clear_hero_errors();
  
  			if(username.length==0)