function setFocus() {
  document.search_form.sh.focus();
  document.search_form.sh.select();
}
  
function menu_jump_url(selObj){ 
  eval("parent.location='"+selObj.options[selObj.selectedIndex].value+"'");
}

/*
 * This is the function that actually highlights a text string by
 * adding HTML tags before and after all occurrences of the search
 * term. You can pass your own tags if you'd like, or if the
 * highlightStartTag or highlightEndTag parameters are omitted or
 * are empty strings then the default <font> tags will be used.
 */
function doHighlight(bodyText, searchTerm, highlightStartTag, highlightEndTag) 
{
  // 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(" ");
  }
  
  var bodyText = document.getElementById('quran_search_result').innerHTML;
  
  if (!bodyText || bodyText == "undefined") {
    return false;
  }
  
  for (var i = 0; i < searchArray.length; i++) {
    bodyText = doHighlight(bodyText, searchArray[i], highlightStartTag, highlightEndTag);
  }
  
  document.getElementById('quran_search_result').innerHTML = bodyText;
  return true;
}


/*
 * This displays a dialog box that allows a user to enter their own
 * search terms to highlight on the page, and then passes the search
 * text or phrase to the highlightSearchTerms function. All parameters
 * are optional.
 */
function highlight_keyword(keyword)
{
  // we can optionally use our own highlight tag values
  //highlightStartTag = '<font id="highlighted-keyword" style="background-color:'+bgcolor+';">';
  highlightStartTag = '<font class="highlighted-keyword-on">';
  highlightEndTag = "</font>";
  

  if (!keyword)  {
    return false;
  }
  
  return highlightSearchTerms(keyword, false, true, highlightStartTag, highlightEndTag);
}


function highlight_toggle(keyword, status) {
  var highlight = document.getElementById('highlight-'+status);
  if (status == 'on') {
	  document.getElementById('highlight-on').style.display = 'inline';
	  document.getElementById('highlight-off').style.display = 'none';
	  toggle_class('highlighted-keyword-off', 'highlighted-keyword-on');
  } else {
	  document.getElementById('highlight-on').style.display = 'none';
	  document.getElementById('highlight-off').style.display = 'inline';
	  toggle_class('highlighted-keyword-on', 'highlighted-keyword-off');
  }
}

function toggle_display(id, status) {
  if (status) {
	  document.getElementById(id).style.display = 'block';
  } else {
	  document.getElementById(id).style.display = 'none';
  }
}

function toggle_class(find_classname, replace_classname)
{
   var tag = getElementsByClassName(document, "*", find_classname);
   
   
   for(i=0; i <tag.length;i++)
   {
       tag[i].className = replace_classname;
   }
}

function getElementsByClassName(oElm, strTagName, oClassNames){
    var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    var arrRegExpClassNames = new Array();
	
    if(typeof oClassNames == "object"){
        for(var i=0; i<oClassNames.length; i++){
            arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames[i].replace(/\-/g, "\\-") + "(\\s|$)"));
        }
    }
    else{
        arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames.replace(/\-/g, "\\-") + "(\\s|$)"));
    }
	
    var oElement;
    var bMatchesAll;
    for(var j=0; j<arrElements.length; j++){
        oElement = arrElements[j];
        bMatchesAll = true;
        for(var k=0; k<arrRegExpClassNames.length; k++){
            if(!arrRegExpClassNames[k].test(oElement.className)){
                bMatchesAll = false;
                break;                      
            }
        }
        if(bMatchesAll){
            arrReturnElements.push(oElement);
        }
    }
	
    return (arrReturnElements)
}