// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// 
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

var Scriptaculous = {
  Version: '1.5.1',
  require: function(libraryName) {
    // inserting via DOM fails in Safari 2.0, so brute force approach
    document.write('<script type="text/javascript" src="'+libraryName+'"></script>');
  },
  load: function() {
    if((typeof Prototype=='undefined') ||
      parseFloat(Prototype.Version.split(".")[0] + "." +
                 Prototype.Version.split(".")[1]) < 1.4)
      throw("script.aculo.us requires the Prototype JavaScript framework >= 1.4.0");
    
    $A(document.getElementsByTagName("script")).findAll( function(s) {
      return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))
    }).each( function(s) {
      var path = s.src.replace(/scriptaculous\.js(\?.*)?$/,'');
      var includes = s.src.match(/\?.*load=([a-z,]*)/);
      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider').split(',').each(
       function(include) { Scriptaculous.require(path+include+'.js') });
    });
  }
}

Scriptaculous.load();

// Custom scripts by Chesty

function getUrlParam(paramName,url){
	var paramValue = null;
	if ( url.indexOf("?") > -1 ){
		var queryString = url.substr(url.indexOf("?"));
		var parameters = queryString.split("&");
		for ( var i = 0; i < parameters.length; i++ ){
			if ( parameters[i].indexOf(paramName + "=") > -1 ){
				var paramTuple = parameters[i].split("=");
				paramValue = paramTuple[1];
				break;
			}
		}
	}
	return paramValue;
}

function detail() {
	var s = getUrlParam("strands",location.href);
	if (s != null) {
		strandsb()
	}
}

function beads() {
	document.getElementById('strands').style.display='none';
	document.getElementById('bea').style.backgroundPosition='0 -35px';
	document.getElementById('str').style.backgroundPosition='0 0';
	document.getElementById('his').style.backgroundPosition='0 0';
	Effect.Appear('beads')
}

function strands() {
	document.getElementById('beads').style.display='none';
	document.getElementById('str').style.backgroundPosition='0 -35px';
	document.getElementById('bea').style.backgroundPosition='0 0';
	document.getElementById('his').style.backgroundPosition='0 0';
	Effect.Appear('strands')
}

function strandsb() {
	document.getElementById('strands').style.display='block';
	document.getElementById('beads').style.display='none';
	document.getElementById('str').style.backgroundPosition='0 -35px';
	document.getElementById('bea').style.backgroundPosition='0 0';
	document.getElementById('his').style.backgroundPosition='0 0';
}