Busqueda en la misma pagina

[nicolaspar]

Eso es Javascript, hay varios ejemplos de esto, uno que encontre en google y no lo probe es:

Código:

<script> 
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>Busca palabras</font><font size="3"><input name="string" type="text" size="15" 
onChange="n = 0;"></font> <input type="submit" value="Buscar"></p> 
</form> 
</center>