how to make Search box to find texts on the pages

This Code gives you a text box and if the user wants to search for anything they just need to put their keywords in the box and this code immediately finds the keyword that the user is looking for.

Compatible browsers:

Instructions :-

1- copy the next javascript code and paste it inside "<head>" tag.

<SCRIPT language="JavaScript">
var NS4 = (document.layers);    
var IE4 = (document.all);
var win = window;    
var n   = 0;
function findInPage(str) {
  var txt, i, found;
  if (str == "")
    return false;
  if (NS4) {
    if (!win.find(str))
      while(win.find(str, false, true))
        n++;
    else
      n++;
    if (n == 0)
      alert("Not found.");
  }
  if (IE4) {
    txt = win.document.body.createTextRange();
    for (i = 0; i <= n && (found = txt.findText(str)) != false; i++) {
      txt.moveStart("character", 1);
      txt.moveEnd("textedit");
    }
    if (found) {
      txt.moveStart("character", -1);
      txt.findText(str);
      txt.select();
      txt.scrollIntoView();
      n++;
    }
    else {
      if (n > 0) {
        n = 0;
        findInPage(str);
      }
      else
        alert("Sorry, we couldn't find.Try again");
   }
  }
  return false;
}
</SCRIPT>

2- copy the next html code and paste it in the body tag.

<FORM name=search onsubmit="return findInPage(this.string.value);">
<P align=center><FONT size=3>
<INPUT 
style="BORDER-RIGHT: #666666 1px solid; BORDER-TOP: #666666 1px solid; FONT-SIZE: 8pt; BORDER-LEFT: #666666 1px solid; BORDER-BOTTOM: #666666 1px solid" 
onchange="n = 0;" size=16 name=string></FONT><BR><INPUT style="BORDER-RIGHT: #ffffff 1px solid; BORDER-TOP: #ffffff 1px solid; FONT-SIZE: 8pt; BORDER-LEFT: #ffffff 1px solid; BORDER-BOTTOM: #ffffff 1px solid; FONT-FAMILY: Tahoma; BACKGROUND-COLOR: #aaaaaa" type=submit value="Search in page" ></form>

3- save page and run.