2 files changed, 95 insertions, 0 deletions
diff --git a/js/arrows.js b/js/arrows.js
new file mode 100644
index 0000000..10ad416
--- /dev/null
+++ b/js/arrows.js
@@ -0,0 +1,37 @@
+
+arrows = [];
+
+const minSpeed = 3;
+const maxSpeed = 8;
+const delay = 1500;
+const lifetime = 20000;
+
+function make_arrow() {
+	const svg = document.getElementById("protoarrow").cloneNode();
+	svg.style.left = Math.random() * 100 + '%';
+	svg.style.display = 'block';
+	document.getElementById('arrows').append(svg);
+	const ob = {
+		y: -800, 
+		svg: svg, 
+		speed: Math.random() * (maxSpeed - minSpeed) + minSpeed
+	};
+	arrows.push(ob);
+	setTimeout(make_arrow, delay);
+	setTimeout(() => {
+		svg.remove();
+		arrows.shift();
+	}, lifetime);
+}
+
+function update() {
+	for (const arrow of arrows) {
+		arrow.y += arrow.speed;
+		arrow.svg.style.bottom = arrow.y + 'px';
+	}
+	
+	window.requestAnimationFrame(update);
+}
+
+make_arrow();
+update();
diff --git a/js/validate_hero.js b/js/validate_hero.js
new file mode 100644
index 0000000..6d29a53
--- /dev/null
+++ b/js/validate_hero.js
@@ -0,0 +1,58 @@
+
+function clear_hero_errors()
+{
+	var errors = document.getElementsByClassName("hero_form_error");
+	var 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;
+			clear_hero_errors();
+
+			if(username.length==0)
+			{
+				document.getElementById("username-length-error").hidden=false;
+				flag=false;
+			}
+			document.activeElement.blur();
+			return flag;
+}
+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;
+
+			var flag=true;
+			clear_hero_errors();
+
+			if(username.length==0)
+			{
+				document.getElementById("username-length-error").hidden=false;
+				flag=false;
+			}
+			if(!email.match(/\S+@\S+/))
+			{
+				document.getElementById("email-error").hidden=false;
+				flag=false;
+			}
+			if(password.length==0)
+			{
+				document.getElementById("password-length-error").hidden=false;
+				flag=false;
+			}
+			if(password !== password2)
+			{
+				document.getElementById("password-match-error").hidden=false;
+				flag=false;
+			}
+			document.activeElement.blur();
+			return flag;
+
+}