// global variable to manage the timeout
var t;
// Start a timeout with each keypress
function StartSearch() {
   if (t) window.clearTimeout(t);
   t = window.setTimeout("LiveSearch()",200);
}
// Perform the search
function LiveSearch() {
   // assemble the PHP filename
   query = document.getElementById("searchlive").value;
   filename = "pages/search.php?query=" + query;
   // DisplayResuls will handle the Ajax response
   ajaxCallback = DisplayResults;
   // Send the Ajax request
   ajaxRequest(filename);
}
// Display search results
function DisplayResults() {
   // remove old list
   ul = document.getElementById("list");
   div = document.getElementById("results");
   div.removeChild(ul);
   // make a new list
   ul = document.createElement("UL");
   ul.id="list";
   names = ajaxreq.responseXML.getElementsByTagName("name");
   for (i = 0; i < names.length; i++) {
      li = document.createElement("LI");
	  a=document.createElement("A");
      name = names[i].firstChild.nodeValue;
      text = document.createTextNode(name);
	  a.href = name;
	  a.appendChild(text);
	  li.appendChild(a);
      ul.appendChild(li);
   }
   if (names.length==0) {
      
   
   }
   // display the new list
   div.appendChild(ul);
}

// set up event handler
obj=document.getElementById("searchlive");
obj.onkeydown = StartSearch;

//Színezés
function szinez(){
	resz=location.href.split("?");
	get=resz[1];
	highlightSearchTerms(get);
}

function doHighlight(bodyText, searchTerm, highlightStartTag, highlightEndTag) 
{
  // the highlightStartTag and highlightEndTag parameters are optional
  if ((!highlightStartTag) || (!highlightEndTag)) {
    highlightStartTag = "<font style='color:blue; background-color:yellow;'>";
    highlightEndTag = "</font>";
  }
  // find all occurences of the search term in the given text,
  // and add some "highlight" tags to them (we're not using a
  // regular expression search, because we want to filter out
  // matches that occur within HTML tags and script blocks, so
  // we have to do a little extra validation)
  var newText = "";
  var i = -1;
  var lcSearchTerm = searchTerm.toLowerCase();
  var lcBodyText = bodyText.toLowerCase();

  while (bodyText.length > 0) {
    i = lcBodyText.indexOf(lcSearchTerm, i+1);
    if (i < 0) {
      newText += bodyText;
      bodyText = "";
    } else {
      // skip anything inside an HTML tag
      if (bodyText.lastIndexOf(">", i) >= bodyText.lastIndexOf("<", i)) {
        // skip anything inside a <script> block
        if (lcBodyText.lastIndexOf("/script>", i) >= lcBodyText.lastIndexOf("<script", i)) {
          newText += bodyText.substring(0, i) + highlightStartTag + bodyText.substr(i, searchTerm.length) + highlightEndTag;
          bodyText = bodyText.substr(i + searchTerm.length);
          lcBodyText = bodyText.toLowerCase();
          i = -1;
        }
      }
    }
  }
  return newText;
}
/*
 * This is sort of a wrapper function to the doHighlight function.
 * It takes the searchText that you pass, optionally splits it into
 * separate words, and transforms the text on the current web page.
 * Only the "searchText" parameter is required; all other parameters
 * are optional and can be omitted.
 */
function highlightSearchTerms(searchText, treatAsPhrase, warnOnFailure, highlightStartTag, highlightEndTag)
{
  // if the treatAsPhrase parameter is true, then we should search for 
  // the entire phrase that was entered; otherwise, we will split the
  // search string so that each word is searched for and highlighted
  // individually
  if (treatAsPhrase) {
    searchArray = [searchText];
  } else {
    searchArray = searchText.split(" ");
  }
  
  if (!document.body || typeof(document.body.innerHTML) == "undefined") {
    if (warnOnFailure) {
      alert("Sorry, for some reason the text of this page is unavailable. Searching will not work.");
    }
    return false;
  }
  var bodyText = document.body.innerHTML;

  for (var i = 0; i < searchArray.length; i++) {
    bodyText = doHighlight(bodyText, searchArray[i], highlightStartTag, highlightEndTag);
  }
  document.body.innerHTML = bodyText;
  return true;
}