buskeda en una pagina

[Myakire]

Aca hay un ejemplo de un buscador de palabras (igual que el buscar de los navegadores) que saque de el viejo Deposito de JavaScript que tengo de cuando solo existia www.maestrosdelweb.com

Código:

<!-- Copiar dentro del tag BODY -->

<script language="JavaScript">

// By Mike Hall ([email protected])

var NS4 = (document.layers); 
var IE4 = (document.all);

var win = window;    // Con frames usar top.nombre.window;
var n   = 0;

function findInPage(str) {

  var txt, i, found;

  if (str == "")
    return false;

  // Find next occurance of the given string on the page, wrap around to the
  // start of the page if necessary.

  if (NS4) {

    // Look for match starting at the current point. If not found, rewind
    // back to the first match.

    if (!win.find(str))
      while(win.find(str, false, true))
        n++;
    else
      n++;

    // If not found in either direction, give message.

    if (n == 0)
      alert("Not found.");
  }

  if (IE4) {
    txt = win.document.body.createTextRange();

    // Find the nth match from the top of the page.

    for (i = 0; i <= n && (found = txt.findText(str)) != false; i++) {
      txt.moveStart("character", 1);
      txt.moveEnd("textedit");
    }

    // If found, mark it and scroll it into view.

    if (found) {
      txt.moveStart("character", -1);
      txt.findText(str);
      txt.select();
      txt.scrollIntoView();
      n++;
    }

    // Otherwise, start over at the top of the page and find first match.

    else {
      if (n > 0) {
        n = 0;
        findInPage(str);
      }

      // Not found anywhere, give message.

      else
        alert("Not found.");
    }
  }

  return false;
}

</script>

<form name="search" onSubmit="return findInPage(this.string.value);">
  <font size="2"><p></font><font size="3"><input name="string" type="text" size="15"
  onChange="n = 0;"></font> <input type="submit" value="Buscar"> </p>
</form>