JavaScript打造隐形的密码框

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<SCRIPT LANGUAGE="JAVASCRIPT1.2">

var msg = "密码正确.";

var url = "http://www.toto369.com";

function initArray() {

  this.length = initArray.arguments.length;

  for (var i = 0; i < this.length; i++) {

  this[i] = initArray.arguments[i];

  }

  }

var password = new initArray(

  53,49,54,56

  );

var pass_count=0;

var cancel_key=27;

  if (document.layers) document.captureEvents(Event.KEYPRESS)

  function backhome(e){

  if (document.layers){

  //if (navigator.appName == "Netscape"){

  if (e.which==password[pass_count]) {

  checkpassword();

  //return false;

  }

  else {

  pass_count=0;

  //return false;

  }

  }

  else if (document.all){

  if (event.keyCode==password[pass_count]){

  checkpassword();

  //return false;

  }

  else {

  pass_count=0;

  //return false;

  }

  }

  }

document.onkeypress=backhome

function checkpassword() {

  pass_count++;

  if(pass_count>=password.length) {

  if(confirm(msg)) window.location=url;

  }

  }

</SCRIPT>