/*************************************
 * Frankendesigns, LLC               *
 * http://www.frankendesigns.com     *
 * info@frankendesigns.com           *
 *************************************/
var ss = {

  fixAllLinks: function() {

    var allLinks = document.getElementsByTagName('a');

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

      var lnk = allLinks[i];

      if ((lnk.href && lnk.href.indexOf('#') != -1) &&

          ( (lnk.pathname == location.pathname) ||

	    ('/'+lnk.pathname == location.pathname) ) &&

          (lnk.search == location.search)) {

        ss.addEvent(lnk,'click',ss.smoothScroll);

      }

    }

  },

  smoothScroll: function(e) {

    if (window.event) {

      target = window.event.srcElement;

    } else if (e) {

      target = e.target;

    } else return;

    if (target.nodeName.toLowerCase() != 'a') {

      target = target.parentNode;

    }

    if (target.nodeName.toLowerCase() != 'a') return;

    anchor = target.hash.substr(1);

    // Now loop all tags until we find one with that name

    var allLinks = document.getElementsByTagName('h1');

    var destinationLink = null;

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

      var lnk = allLinks[i];

      if (lnk.id && (lnk.id == anchor)) {

        destinationLink = lnk;

        break;

      }

    }

    if (!destinationLink) return true;

    var destx = destinationLink.offsetLeft;

    var desty = destinationLink.offsetTop;

    var thisNode = destinationLink;

    while (thisNode.offsetParent &&

          (thisNode.offsetParent != document.body)) {

      thisNode = thisNode.offsetParent;

      destx += thisNode.offsetLeft;

      desty += thisNode.offsetTop;

    }

    clearInterval(ss.INTERVAL);

    cypos = ss.getCurrentYPos();

    ss_stepsize = parseInt((desty-cypos)/ss.STEPS);

    ss.INTERVAL =

setInterval('ss.scrollWindow('+ss_stepsize+','+desty+',"'+anchor+'")',20);

    if (window.event) {

      window.event.cancelBubble = true;

      window.event.returnValue = false;

    }

    if (e && e.preventDefault && e.stopPropagation) {

      e.preventDefault();

      e.stopPropagation();

    }

  },

  scrollWindow: function(scramount,dest,anchor) {

    wascypos = ss.getCurrentYPos();

    isAbove = (wascypos < dest);

    window.scrollTo(0,wascypos + scramount);

    iscypos = ss.getCurrentYPos();

    isAboveNow = (iscypos < dest);

    if ((isAbove != isAboveNow) || (wascypos == iscypos)) {

      window.scrollTo(0,dest);

      clearInterval(ss.INTERVAL);

      location.hash = anchor;

    }

  },

  getCurrentYPos: function() {

    if (document.body && document.body.scrollTop)

      return document.body.scrollTop;

    if (document.documentElement && document.documentElement.scrollTop)

      return document.documentElement.scrollTop;

    if (window.pageYOffset)

      return window.pageYOffset;

    return 0;

  },

  addEvent: function(elm, evType, fn, useCapture) {

    if (elm.addEventListener){

      elm.addEventListener(evType, fn, useCapture);

      return true;

    } else if (elm.attachEvent){

      var r = elm.attachEvent("on"+evType, fn);

      return r;

    } else {

      alert("Handler could not be removed");

    }

  }

}

ss.STEPS = 5;

ss.addEvent(window,"load",ss.fixAllLinks);