//
   //File name	: nav_path.js
   //Creator	: Doug Barclay Imatics Inc. 2003
   //Date		: 02/18/03
   //Updated by	: Jana Gillis
   //Update date: 06/08/10
   //Purpose	: generates a nav path for each folder liested in the valid_folders_array below
   //           : each folder MUST contain a nav_path.txt file
   //			: *** see To Do below...
//



// *** To Do - for each folder in your site that you wish a nav path
//             to be displayed, you must add the folder name (include the forward slashes)
//             to the array below. Be sure to increase the array size for each
//			   folder you add.	    
var valid_folders_array = new Array(3);  // build our valid folders array, this array contains the folders in which the nav path will be shown

valid_folders_array[0] = "/genome/";

valid_folders_array[4] = "/genome/03/a/";
valid_folders_array[5] = "/genome/03/c/";
valid_folders_array[6] = "/genome/03/c/10/";
valid_folders_array[7] = "/genome/03/c/20/";
valid_folders_array[8] = "/genome/03/d/";
valid_folders_array[9] = "/genome/03/d/10/";
valid_folders_array[10] = "/genome/03/d/20/";
valid_folders_array[11] = "/genome/03/d/30/";
valid_folders_array[12] = "/genome/03/d/40/";
valid_folders_array[13] = "/genome/03/e/";
valid_folders_array[14] = "/genome/03/f/";
valid_folders_array[15] = "/genome/04/";
valid_folders_array[16] = "/genome/04/041/";
valid_folders_array[17] = "/genome/04/042/";
valid_folders_array[18] = "/genome/04/043/";
valid_folders_array[19] = "/genome/05/051/";
valid_folders_array[20] = "/genome/05/051/0511/";
valid_folders_array[21] = "/genome/05/051/0512/";
valid_folders_array[22] = "/genome/05/051/0513/";
valid_folders_array[23] = "/genome/05/051/0514/";
valid_folders_array[24] = "/genome/05/051/0515/";
valid_folders_array[25] = "/genome/05/052/";
valid_folders_array[26] = "/genome/06/061/";
valid_folders_array[27] = "/genome/06/062/";
valid_folders_array[28] = "/genome/06/062/0621/";
valid_folders_array[29] = "/genome/06/062/0622/";
valid_folders_array[30] = "/genome/06/062/0623/";
valid_folders_array[31] = "/genome/06/062/0625/";
valid_folders_array[32] = "/genome/06/062/0626/";
valid_folders_array[33] = "/genome/06/062/0627/";
valid_folders_array[34] = "/genome/06/062/0628/";
valid_folders_array[35] = "/genome/06/062/0629/";
valid_folders_array[36] = "/genome/06/062/0630/";


// our variables the determine the language of our files
var english_file = "_e";
var french_file = "_f";


// our function to display our nav path
function ShowPath()
{
  var url_ = "" + document.location;
  url_ = url_.toLowerCase();
  var nav_path_file_name = GetNavPathFileName(url_);
  url_ = Replace(url_, "http://", "");
  var start_pos  = 0;
  var end_pos = 0;
  var next_start_pos = 0;
  var nav_path_str = "";
  var folder_name = "";
  var folder_title = "";
  var full_path = "";
  var nav_path_started = false;
  
  while (true)
  {
   
    start_pos = url_.indexOf("/", start_pos);
    end_pos = url_.indexOf("/", start_pos+1);
    next_start_pos = url_.indexOf("/", end_pos+1);
  
    // check for no more folders
    if (end_pos < 1)
    {
      break;
    }

  
    folder_name = folder_name + url_.substring(start_pos, end_pos)
    full_path = folder_name;
    
    if (CheckValidFolder(folder_name + "/"))  // need to add our last forward slash since we do not include it in our substring code above
    {
      // if our nav path has already started then show our separator   
      
      if (nav_path_started == true)
      {
        document.write("<script language='Javascript' src='/genome/includes/" + "separator.js" + "' type='text/javascript'></sc" + "ript>");
      }
      
      document.write("<script language='Javascript' src='" + full_path + "/" + nav_path_file_name + "' type='text/javascript'></sc" + "ript>");
      nav_path_started = true; // set our flag so we know we should print our separator
    }
    
    start_pos = end_pos;
    end_pos = 0;
  }
}


// function that determines our nav path .txt  file name
function GetNavPathFileName(url_)
{
  var return_value = "";
  return_value = "nav_path" + english_file + ".txt"; // set the default nav path to english
  
  // determine if url is english file name
  if (url_.indexOf(english_file) > 0)
  {
    return_value = "nav_path" + english_file + ".txt";
  }
  
  // determine if url is french file name
  if (url_.indexOf(french_file) > 0)
  {
    return_value = "nav_path" + french_file + ".txt";
  }

  
  return return_value;
}


// function to ensure the folder name is one that nav path will be shown
function CheckValidFolder(folder_name)
{
  var x = 0;
  var return_value = false;
  
  while (x < valid_folders_array.length) // loop through our folder names array
  {
    if (folder_name == valid_folders_array[x])
    {
      return_value = true;
      break;    
    }
    x++;
  }
  
  if (return_value)
  {
    //alert("valid=" + folder_name)
  }
  
  return return_value;
}



// function to replace a string with a string
function Replace(str, searchFor, replaceWith)
{
  var i = str.indexOf(searchFor);
  while ( i!=-1 )
  {
    var j = i+searchFor.length;
    str = str.substring(0,i)+replaceWith+str.substring(j,str.length);
    i = str.indexOf(searchFor,i+replaceWith.length);
  } 
  return str;
}