// JScript File

//see if we can grab the date on the server
var latest;

function TimeSincePublished(publish, current, formattedPublish)
{
  var curdate;
  var maxseconds = 7200;
  //parse publish date into date object
  var year = publish.substr(0,4);
  var month = publish.substr(5,2);
  month--;
  var days = publish.substr(8,2);
  var hours = publish.substr(11,2);
  var mins = publish.substr(14,2);
  var seconds = publish.substr(17,2);
  var pubdate = new Date(year,month,days,hours,mins,seconds,0);
  
  if (!latest) { //if not already loaded then try loading it
    latest = readHTTPHeaders("/js/functions.js?" + Math.random()*5000);
  }
  
  if (latest.length > 1) {
    curdate = new Date(latest);
  } else {
    // if that failed that parse the stale date that came with the page
    year = current.substr(0,4);
    month = current.substr(5,2);
    month--;
    days = current.substr(8,2);
    hours = current.substr(11,2);
    mins = current.substr(14,2);
    seconds = current.substr(17,2);
    curdate = new Date(year,month,days,hours,mins,seconds,0);
  }

  //figure out the difference
  
  var difference = curdate.getTime() - pubdate.getTime();
  difference = difference / 1000;
  if (difference < maxseconds) {
  
    var minutes = Math.round(difference / (60));
    if (minutes) { document.write("<span class='minutesAgo'>" + minutes + " min. ago</span>");}
    }
//   else {
//   if (formattedPublish.substr(0,4) == 'May.')
//        formattedPublish = formattedPublish.substr(0,3) + formattedPublish.substr(4);
//   document.write("<div class='publishDate'>" + formattedPublish + "</div>");
//   }

}

 function readHTTPHeaders (url) { 
 var req = false;
     if(window.XMLHttpRequest && !(window.ActiveXObject)) {
        try {
                        req = new XMLHttpRequest();
        } catch(e) {
                        req = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
        try {
                req = new ActiveXObject("Msxml2.XMLHTTP");
        } catch(e) {
                try {
                        req = new ActiveXObject("Microsoft.XMLHTTP");
                } catch(e) {
                        req = false;
                }
                }
    }
    
    try { 
      req.open('HEAD', url, false); 
      req.send(null); 
      return req.getResponseHeader("Date"); 
    } 
    catch (e) { 
      return ""; 
    }
}

//for article list back/forth
function Querystring(qs) {
 var value;
  var pair;
  var name;
  this.params = new Object();
  this.get= function (key) { return this.params[key]; }

  if (qs == null) {
    qs=location.search.substring(1,location.search.length);
  }

  if (qs.length == 0) {
    return;
  }

  qs = qs.replace(/\+/g, ' ');
  var args = qs.split('&');
  for (var i=0;i<args.length;i++) {
    value;
    pair = args[i].split('=');
    name = unescape(pair[0]);
    if (pair.length == 2) {
      value = unescape(pair[1]);
    } else {
      value = name;
    }
    this.params[name] = value;
  }
}


function jumpto(pagenum)
{
  pagenum = parseInt(pagenum) + parseInt(index);
  if (pagenum >= 0 && pagenum < idarray.length) {
   location="article?assetID="+idarray[pagenum]+"&assetIDx="+ids;
  }
}

var qs = new Querystring();
var idxID = qs.get("assetID");
var index = 0;
var idarray;

if (idxID && idxID.length > 0) {
  var ids = qs.get("assetIDx");

  idarray = ids.split(",");  
  index = 0;
  for (i=0;i<idarray.length;i++) {
    if (idarray[i] == idxID) {
      index = i;
      break;
    }
  }
}

//add default prev next functions? lets see if it causes any problems
function drawPrev()
{
  if (index > 0) {
    document.write('<a href="javascript:jumpto(-1)">< Previous story </a>');
  }
}
function drawNext()
{
  if (idarray && index < idarray.length - 1) {
    document.write('<a href="javascript:jumpto(1)">Next story ></a>');
  }
}

var ListOfIds = new Array(); //holds 
function addid(key, id)
{

  if (ListOfIds[key]) {
    ListOfIds[key] = ListOfIds[key] + "," + id;
  } else {
    ListOfIds[key] = id;
  }
}

function gotolink(key, id)
{
  location="/article?assetID="+id+"&assetIDx=" + ListOfIds[key];
}

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function highlightWord(node,word) {
	// Iterate into this nodes childNodes
	if (node.hasChildNodes) {
		var hi_cn;
		for (hi_cn=0;hi_cn<node.childNodes.length;hi_cn++) {
			highlightWord(node.childNodes[hi_cn],word);
		}
	}

	// And do this node itself
	if (node.nodeType == 3) { // text node
		tempNodeVal = node.nodeValue.toLowerCase();
		tempWordVal = word.toLowerCase();
		var pattern = new RegExp("\\b" + tempWordVal + "\\b");
		if (tempNodeVal.match(pattern)) {
			pn = node.parentNode;
			if (pn.className != "searchword") {
				// word has not already been highlighted!
				nv = node.nodeValue;
				ni = tempNodeVal.indexOf(tempWordVal);
				// Create a load of replacement nodes
				before = document.createTextNode(nv.substr(0,ni));
				docWordVal = nv.substr(ni,word.length);
				after = document.createTextNode(nv.substr(ni+word.length));
				hiwordtext = document.createTextNode(docWordVal);
				hiword = document.createElement("span");
				hiword.className = "searchword";
				hiword.appendChild(hiwordtext);
				pn.insertBefore(before,node);
				pn.insertBefore(hiword,node);
				pn.insertBefore(after,node);
				pn.removeChild(node);
			}
		}
	}
}

function localSearchHighlight(searchStr) {
	if (!document.createElement) return;
        if (searchStr == '') return;
	// Trim leading and trailing spaces after unescaping
	searchstr = unescape(searchStr).replace(/^\s+|\s+$/g, "");
	if( searchStr == '' ) return;
	phrases = searchStr.replace(/\+/g,' ').split(/\"/);
	// Use this next line if you would like to force the script to always
	// search for phrases. See below as well!!!
	//phrases = new Array(); phrases[0] = ''; phrases[1] = searchStr.replace(/\+/g,' ');
	for(p=0;p<phrases.length;p++) {
	        phrases[p] = unescape(phrases[p]).replace(/^\s+|\s+$/g, "");
		if( phrases[p] == '' ) continue;
		if( p % 2 == 0 ) words = phrases[p].replace(/([+,()]|%(29|28)|\W+(AND|OR)\W+)/g,' ').split(/\s+/);
		else { words=Array(1); words[0] = phrases[p]; }
		var LuceneResults = document.getElementById("LuceneResults");
		var hiliteTextAreas = getElementsByClass("hiliteText",LuceneResults,"div");
        for (w=0;w<words.length;w++) {
			if( words[w] == '' ) continue;
			for (var j=0;j<hiliteTextAreas.length;j++) {
			  highlightWord(hiliteTextAreas[j],words[w]);
			}
        }
	}
}

function clearDefault(el)
{
   if (el.defaultValue==el.value) el.value = ""
}

function doSearch(form) {
  var searchurl="http://thespec.metrolandwest.com/search?";
  
  var headline;
  if (form.headline) {
    headline = form.headline.value;
  }
  
  var keywords;
  if (form.kquery) {
    keywords = form.kquery.value;
  } else {
     if (form.keywords) {
       keywords = form.keywords.value;
     }
  }
  
  var category;
  if (form.category) {
    category = form.category.options[form.category.selectedIndex].value;
  }
    
  var byline;
  if (form.byline) {
    byline = form.byline.value;
  }
  
  var body;
  if (form.body) {
    body = form.body.value;
  }
  
  var daterange;
  if (form.daterange) {
    daterange = form.daterange.options[form.daterange.selectedIndex].value;
  }
  
  var orderby;
  
  if (form.orderby && form.orderby[1].checked) {
    orderby = form.orderby[1].value;
  }
  
  if (keywords) {
     searchurl += "&q=" + keywords;  
  }
  
  searchurl += "&r=";
  if (headline) {
     searchurl += "Title:\"" + headline + "\" AND ";
  }
  if (category) {
     searchurl += "category:\"" + category + "\" AND ";
  }
  if (byline) {
     searchurl += "(SubTitle1:\"" + byline + "\" OR SubTitle2:\"" + byline + "\") AND ";
  }
  if (body) {
     searchurl += "Body:\"" + body + "\" AND ";
  }
  if (headline || category || byline || body) {
     searchurl = searchurl.substr(0, searchurl.length -5)
  }
  if (daterange) {
     searchurl += "&edr=" + daterange;
  }
  if (orderby) {
     searchurl += "&OrderBy=" + orderby;
  }

  //check if we should do a google request instead
  if (form.searchType && form.searchType[1].checked) {
    searchurl = "http://www.google.com/search?q=" + keywords;
  }
  document.location = searchurl;
  return false;
}

function  GetCurrDate()
{
    var m_names = new Array("January", "February", "March",
            "April", "May", "June", "July", "August", "September",
            "October", "November", "December");
            
    var d_names = new Array("Sunday", "Monday", "Tuesday",
            "Wednesday", "Thursday", "Friday", "Saturday");

    var d = new Date();
    var curr_day = d.getDay();
    var curr_date = d.getDate();
    var curr_month = d.getMonth();
    var curr_year = d.getFullYear();

    document.write(d_names[curr_day] + ", " + m_names[curr_month] + " " + curr_date +  ", " + curr_year);
}

function checkenter(evt, form) {
  if (evt) {
     alert(keyCode);
  } else {
    keyCode = window.event.keyCode;
  }
  if (window.event.keyCode==13){
     doSearch(form);
  }
  return true;
}

function noenter(evt) {
  if (evt) {
    keyCode = evt.which;
  } else {
    keyCode = window.event.keyCode;
  }
      if (keyCode == 13){
        return false;
      }
      
  return true;
}