/* This script and many more are available free online at
The JavaScript Source :: http://javascript.internet.com
Created by: Harald Hope, Tapio Markula :: http://techpatterns.com/ */

/* Licensed under the GNU Lesser General Public License
http://www.gnu.org/licenses/lgpl.txt */

//initialization, browser, os detection
var d, dom, nu='', brow='', ie, ie4, ie5, ie5x, ie6, ie7;
var ns4, moz, moz_rv_sub, release_date='', moz_brow, moz_brow_nu='', moz_brow_nu_sub='', rv_full='';
var mac, win, old, lin, ie5 , ie5xwin, konq, saf, op, op4, op5, op6, op7;

d=document;
n=navigator;
nav=n.appVersion;
nan=n.appName;
nua=n.userAgent;
old=(nav.substring(0,1)<4);
mac=(nav.indexOf('Mac')!=-1);
win=( ( (nav.indexOf('Win')!=-1) || (nav.indexOf('NT')!=-1) ) && !mac)?true:false;
lin=(nua.indexOf('Linux')!=-1);
// begin primary dom/ns4 test
// this is the most important test on the page
if ( !document.layers ) {
  dom = ( d.getElementById ) ? d.getElementById : false;
} else {
  dom = false;
  ns4 = true;// only netscape 4 supports document layers
}
// end main dom/ns4 test

op=(nua.indexOf('Opera')!=-1);
saf=(nua.indexOf('Safari')!=-1);
konq=(!saf && (nua.indexOf('Konqueror')!=-1) ) ? true : false;
moz=( (!saf && !konq ) && ( nua.indexOf('Gecko')!=-1 ) ) ? true : false;
ie=((nua.indexOf('MSIE')!=-1)&&!op);
if (op) {
  str_pos=nua.indexOf('Opera');
  nu=nua.substr((str_pos+6),4);
  brow = 'Opera';
} else if (saf) {
  str_pos=nua.indexOf('Safari');
  nu=nua.substr((str_pos+7),5);
  brow = 'Safari';
} else if (konq) {
  str_pos=nua.indexOf('Konqueror');
  nu=nua.substr((str_pos+10),3);
  brow = 'Konqueror';
}
// this part is complicated a bit, don't mess with it unless you understand regular expressions
// note, for most comparisons that are practical, compare the 3 digit rv nubmer, that is the output
// placed into 'nu'.
else if (moz) {
  // regular expression pattern that will be used to extract main version/rv numbers
  pattern = /[(); \n]/;

  // moz type array, add to this if you need to
  moz_types = new Array( 'Firebird', 'Phoenix', 'Firefox', 'Galeon', 'K-Meleon', 'Camino', 'Epiphany',
          'Netscape6', 'Netscape', 'MultiZilla', 'Gecko Debian', 'rv' );
  rv_pos = nua.indexOf( 'rv' );// find 'rv' position in nua string
  rv_full = nua.substr( rv_pos + 3, 6 );// cut out maximum size it can be, eg: 1.8a2, 1.0.0 etc

  // search for occurance of any of characters in pattern, if found get position of that character
  rv_slice = ( rv_full.search( pattern ) != -1 ) ? rv_full.search( pattern ) : '';

  //check to make sure there was a result, if not do  nothing
  // otherwise slice out the part that you want if there is a slice position
  ( rv_slice ) ? rv_full = rv_full.substr( 0, rv_slice ) : '';

  // this is the working id number, 3 digits, you'd use this for
  // number comparison, like if nu >= 1.3 do something
  nu = rv_full.substr( 0, 3 );
  for (i=0; i < moz_types.length; i++) {
    if ( nua.indexOf( moz_types[i]) !=-1 ) {
      moz_brow = moz_types[i];
      break;
    }
  }
  if ( moz_brow ){// if it was found in the array 
    str_pos=nua.indexOf(moz_brow);// extract string position
    moz_brow_nu = nua.substr( (str_pos + moz_brow.length + 1 ) ,3);// slice out working number, 3 digit

    // if you got it, use it, else use nu
    moz_brow_nu = ( isNaN( moz_brow_nu ) ) ? moz_brow_nu = nu: moz_brow_nu;
    moz_brow_nu_sub = nua.substr( (str_pos + moz_brow.length + 1 ), 8);

    // this makes sure that it's only the id number
    sub_nu_slice = ( moz_brow_nu_sub.search( pattern ) != -1 ) ? moz_brow_nu_sub.search( pattern ) : '';

    //check to make sure there was a result, if not do  nothing
    ( sub_nu_slice ) ? moz_brow_nu_sub = moz_brow_nu_sub.substr( 0, sub_nu_slice ) : '';
  }
  if ( moz_brow == 'Netscape6' ) {
    moz_brow = 'Netscape';
  // default value if no other gecko name fit
  } else if ( moz_brow == 'rv' || moz_brow == '' ) {
    moz_brow = 'Mozilla';
  }
  if ( !moz_brow_nu ){// use rv number if nothing else is available 
    moz_brow_nu = nu;
    moz_brow_nu_sub = nu;
  }
  if (n.productSub) {
    release_date = n.productSub;
  }
} else if (ie) {
  str_pos=nua.indexOf('MSIE');
  nu=nua.substr((str_pos+5),3);
  brow = 'Microsoft Internet Explorer';

// default to navigator app name
} else {
  brow = nan;
}
op5=(op&&(nu.substring(0,1)==5));
op6=(op&&(nu.substring(0,1)==6));
op7=(op&&(nu.substring(0,1)==7));
op8=(op&&(nu.substring(0,1)==8));
op9=(op&&(nu.substring(0,1)==9));
ie4=(ie&&!dom);
ie5=(ie&&(nu.substring(0,1)==5));
ie6=(ie&&(nu.substring(0,1)==6));
ie7=(ie&&(nu.substring(0,1)==7));

// default to get number from navigator app version.
if(!nu) {
  nu = nav.substring(0,1);
}

/*ie5x tests only for functionavlity. dom or ie5x would be default settings.
Opera will register true in this test if set to identify as IE 5*/
ie5x=(d.all&&dom);
ie5mac=(mac&&ie5);
ie5xwin=(win&&ie5x);

function applyStyles(skinPath){
        if (!document.createStyleSheet){
            var styles;
           /* if(mac){
                styles = skinPath + "/SEOMenu-FF-Mac.css";
            } else {   */ 
                styles = skinPath + "/SEOMenu-FF-IE7-Win.css";
            var newStyleSheet=document.createElement("link");
            newStyleSheet.rel="stylesheet";
            newStyleSheet.type="text/css"
            newStyleSheet.href=styles
            document.getElementsByTagName("head")[0].appendChild(newStyleSheet);
         }
}

function applyIEStyles(skinPath,lessThan_v7){
    if (lessThan_v7){
        document.createStyleSheet(skinPath + "/SEOMenu-IE.css");    
    } else {
        document.createStyleSheet(skinPath + "/SEOMenu-FF-IE7-Win.css");
    }
}