//------------------------------------------------------------------------------

// utility functions

function print() {

  var i;

  for (i=0; i<print.arguments.length; i++) {

    document.write(print.arguments[i]);

  }

  document.writeln();

}



function printarray(a) {

  var i;

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

    document.write(a[i]);

  }

  document.writeln();

}



/* ---------------------------------------------------------------------- *\

  Function    : ReadForm()

  Description : Parse Get Form query strings and return "object hash"

  Usage       : var Request = new ReadForm();

  Example     : for (qname in Request) {         // Loop over name/value pairs:

                  alert(qname + " = " + Request[qname]);

                }

  Requires    : Javascript1.1

\* ---------------------------------------------------------------------- */



function ReadForm() {



  var Query   = window.location.search;                 // query string

  var Request = new Object();

  var pairs   = new Array();



  // remove ? from query string

  if (Query.charAt(0) == '?') { Query = Query.substring(1, Query.length); }



  pairs = Query.split("&");

  

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

    var thispair = pairs[i]

    var temp = '';



    // Replace + char with ' ' 

    for (var n=0; n < thispair.length; n++) {

      var chr = thispair.charAt(n);

      if (chr == '+') { chr = ' '; }

      temp += chr;

    }

    thispair = temp;



    // split into name and value

    var namevalue = thispair.split("=");



    // set field name/value values.  set undefined values to zero length string

    var fname  = (namevalue[0] == null)  ? '' : unescape( namevalue[0] );

    var fvalue = (namevalue[1] == null)  ? '' : unescape( namevalue[1] );

    

    if (fname.length) { this[fname] = fvalue; }            // set object value

  }

}



//------------------------------------------------------------------------------

// parse document url  http://site.com/url/?key=value&key=value...

// return object hash with 

//   .url = url portion (everything before the ?)

//   .key = value       (each key=value as a property)



function ParseDocumentURL() {

  var pos, full_url;



  var urlinfo = new ReadForm(); 

  

  full_url = document.URL;

  pos = full_url.indexOf('?',0);                   // get additional URL parms

  if (pos==-1)  { pos = full_url.length; }  

  urlinfo.url = full_url.substring(0,pos);

  return urlinfo;

}



//------------------------------------------------------------------------------

// PrintPageLink: display a link for a page

//   currpage = page number to use in url

//   pagestr  = page description (usually 1,2,3...)

//   urlinfo



function PrintPageLink( currpage, pagestr, urlinfo ) {

  print( '<a class="textbold" href="', urlinfo.url, '?page=', currpage);

  for (var parm in urlinfo) {

    if (parm != 'page' && parm != 'url') {

      print( '&', parm, '=', urlinfo[parm] );

    }

  }

  print( '">', pagestr, '</a> ');

}



//------------------------------------------------------------------------------

// PrintPageNav: display the page navigation

//   currpage = page number user currently on

//   num_pages= total number of pages 

//   urlinfo

// Global vars:

//   showPageNavAll : whether or not to include [all] link for displaying all pages



function PrintPageNav( currpage, num_pages, urlinfo ) {



  currpage = parseInt(currpage);

  print('<p>');

  print('<img src="http://www.thetechherald.com/global/img/pages.gif" width="25" height="25" align="middle">');	

  

  // all pages link (single document)

  if (showPageNavAll) PrintPageLink('all', '[all]', urlinfo);

  

  // prev page link

  if (currpage>1) { PrintPageLink(currpage-1, '', urlinfo); }

  else            { print(''); }

  

  // list of page number links

  for (var p=1; p<=num_pages; p++) {

    if (p>1)         { print('| '); }

    if (p==currpage) { print( ' ' + p + ' ' ); }

    else             { PrintPageLink(p, p, urlinfo); }

  }

  

  // next page link

  if (currpage<num_pages) { PrintPageLink(currpage + 1, '', urlinfo); }

  else                    { print(''); }

}





//------------------------------------------------------------------------------

// PrintPage: display page N, where N is page 1..

//   use page='all' to print all;



function PrintPage( pages, currpage, urlinfo ) {

  var num_pages = pages.length;

  print('<p>');

  if      (currpage == 'all')                { printarray(pages); } // print all pages

  else if (currpage<1 || currpage>num_pages) {                    } // page-not-found error handling

  else                                       { print(pages[currpage-1]);  } // javascript 0-based but users pages 1-based

}



//------------------------------------------------------------------------------

// PrintArticle: Display one page of an article. Select page via url.

//   http://url?page=nn

//   if nn=all, displays entire article

// Global vars:

//   PageContent    : article content js_encoded 

//   PageMarker     : string used to separate "pages"

//   showPageNavTop : whether or not to show page nav bar before article

//   showPageNavBot : whether or not to show page nav bar after article



function PrintArticle() {

  var urlinfo = ParseDocumentURL();



  var PageMarker_je = PageMarker;

  // create the _je encoded version of Marker

  PageMarker_je = PageMarker_je.replace( /</g, "\&lt;" );

  PageMarker_je = PageMarker_je.replace( />/g, "\&gt;" );

  var PageMarker_regex = new RegExp( PageMarker_je, "g" );

  // change the _je encoded Marker to regular Marker

  PageContent = PageContent.replace( PageMarker_regex, PageMarker );



  var currpage = urlinfo['page'];

  if (currpage==null) currpage=1;



  var pages = PageContent.split( PageMarker );

  var num_pages = pages.length;



  if (showPageNavTop && num_pages>1) { PrintPageNav( currpage, num_pages, urlinfo ); }   // Page nav bar above article contents

  PrintPage(pages, currpage, urlinfo);

  if (showPageNavBot && num_pages>1) 

  { 

  	print('<div style="clear:left;"></div>');

  	PrintPageNav( currpage, num_pages, urlinfo ); 

  }   // Page nav bar below article contents

}  



//------------------------------------------------------------------------------

// PrintPrinterArticle: Show entire article. 

// Converts &lt;!--page--&gt; to <!--page-->

// Global vars:

//   PageContent    : article content js_encoded 

//   PageMarker     : string used to separate "pages"



function PrintPrinterArticle() {

  var PageMarker_je = PageMarker;



  // create the _je encoded version of Marker

  PageMarker_je = PageMarker_je.replace( /</g, "&lt;" );

  PageMarker_je = PageMarker_je.replace( />/g, "&gt;" );



  // make the _je Marker into a regex

  var reg = new RegExp( PageMarker_je, "g" );

  

  // change _je Marker into regular version

  PageContent = PageContent.replace( reg, PageMarker );

  print(PageContent);

}