/**
 * addition by Hippo for Rijksbegroting.nl: added getRequestParameter(name) 
 */

/* New from Rob Nitti, who credits 
 * http://bytes.com/groups/javascript/145532-replace-french-characters-form-inp
 * The code finds accented vowels and replaces them with their unaccented version. */
function stripVowelAccent(str)
{
	var rExps=[ /[\xC0-\xC2]/g, /[\xE0-\xE2]/g,
		/[\xC8-\xCA]/g, /[\xE8-\xEB]/g,
		/[\xCC-\xCE]/g, /[\xEC-\xEE]/g,
		/[\xD2-\xD4]/g, /[\xF2-\xF4]/g,
		/[\xD9-\xDB]/g, /[\xF9-\xFB]/g ];

	var repChar=['A','a','E','e','I','i','O','o','U','u'];

	for(var i=0; i<rExps.length; ++i)
		str=str.replace(rExps[i],repChar[i]);

	return str;
}

/* Modification of */
/* http://www.kryogenix.org/code/browser/searchhi/ */
/* See: */
/*   http://www.tedpavlic.com/post_highlighting_search_results_with_ted_searchhi_javascript.php */    
/*   http://www.tedpavlic.com/post_inpage_highlighting_example.php */
/* for additional modifications of this base code. */
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 = stripVowelAccent(node.nodeValue.toLowerCase());
		tempWordVal = stripVowelAccent(word.toLowerCase());
		if (tempNodeVal.indexOf(tempWordVal) != -1) {
			pn = node.parentNode;
			if (pn.className != "search-term-hilite") {
				// 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 = "search-term-hilite";
				hiword.appendChild(hiwordtext);
				pn.insertBefore(before,node);
				pn.insertBefore(hiword,node);
				pn.insertBefore(after,node);
				pn.removeChild(node);
			}
		}
	}
}

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

	// And do this node itself
	if (node.nodeType == 3) { // text node
		pn = node.parentNode;
		if( pn.className == "search-term-hilite" ) {
			prevSib = pn.previousSibling;
			nextSib = pn.nextSibling;
			nextSib.nodeValue = prevSib.nodeValue + node.nodeValue + nextSib.nodeValue;
			prevSib.nodeValue = '';
			node.nodeValue = '';
		}
	}
}

function localSearchHighlight() {
	var stopWords = ["de","en","van","ik","te","dat","die","in","een","hij","het","niet","zijn","is","was","op","aan","met","als","voor","had","er","maar","om","hem","dan","zou","of","wat","mijn","men","dit","zo","door","over","ze","zich","bij","ook","tot","je","mij","uit","der","daar","haar","naar","heb","hoe","heeft","hebben","deze","u","want","nog","zal","me","zij","nu","ge","geen","omdat","iets","worden","toch","al","waren","veel","meer","doen","toen","moet","ben","zonder","kan","hun","dus","alles","onder","ja","eens","hier","wie","werd","altijd","doch","wordt","wezen","kunnen","ons","zelf","tegen","na","reeds","wil","kon","niets","uw","iemand","geweest","andere"];
	
	var searchStr = getRequestParameter('zoekwoord');
	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]; }
   	for (w=0;w<words.length;w++) {
   		
   		// too bad IE7 and older do not support ArrayList.indexOf
   		for(sw=0; sw<stopWords.length; sw++) {
   			if(words[w].toLowerCase()==stopWords[sw]) {
   				words[w]='';
   			}
   		}
   		
			if( words[w] == '' ) continue;
			highlightWord(document.getElementById("content-main-content"),words[w]);
    }
	}
}

function displaySearchform() {
	var searchForm = document.getElementById('search-form-placeholder');
	var searchStr = getRequestParameter('zoekwoord');
	var onfocusStr = '';
	if (searchStr == null || searchStr == undefined || searchStr == '') {
		searchStr = 'Typ hier uw zoektermen';
		onfocusStr = ' onfocus="this.value=\'\'"';
	}
  if (!(searchForm == null || searchForm==undefined)) {
  	searchForm.innerHTML='<form method="get" action="" id="search-form"><p><label for="search-term">Zoek in deze pagina naar:</label><input id="search-term" name="zoekwoord" value="'+searchStr+'" size="15" title="Typ hier uw zoektermen" type="text" '+onfocusStr+' /><button type="submit" id="search-submit" name="search-submit" title="Start het zoeken">Zoek</button></p></form>';
	}
}