Java script help (116158)

i have three errors in my code that i dont know how to fix they are

and this is the code

#pragma strict
var enemyprefab:Gameobject;
var enemyspawner:int;
var player:Gameobject;
var spawn:boolen;
var minwait:int;
var maxwait:int;

function Start () {
minwait =5;
maxwait =15;
waittimr = Random.range(minwait, maxwait);
spawn = true;

}

function Update () {
   if spawn ();
   {
       spawn();
   }
}
function spawn()
{
   instaniate(enemyprefab, Transform.Position, Transform, rotation);
   enemysSpawned +=1;
   Newwait Time();
   spawn = falsesetspaw();
}
function setSpawn()
{
  yield WaitForSeconds(waittime);
  spawn = true;
}
function NewwaitTime()
{
  waittime = Random.Range(minwait, maxwait);

}

function Update () {
if spawn ();
{
spawn();
}
}

This one makes little sense. Maybe as such:

function Update () {
   if (condition)
   {
       spawn();
   }
 }

function spawn()
{
   instaniate(enemyprefab, Transform.Position, Transform, rotation);
   enemysSpawned +=1;
   Newwait Time(); // Here should be NewwaitTime(); altogether
   spawn = falsesetspaw();
}