/**
 * -----------------------------------------------------------------------------
 * Fonctions utilitaires.
 * @author Dreamclic <contact@dreamclic.com>
 * @version 3.0 - oct 2010
 * -----------------------------------------------------------------------------
 */

/**
 * Ouvre une fenêtre popup.
 */
function popup(x,y,w,h,url){
	return window.open(url,"_blank","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,top="+y+",left="+x+",width="+w+",height="+h);
}

/**
 * Ouvre une fenêtre popup redimentionnable.
 */
function popupResizable(x,y,w,h,url){
	return window.open(url,"_blank","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,top="+y+",left="+x+",width="+w+",height="+h);
}

/**
 * Import d'un script JS.
 */
function include(fileName){
	document.write("<script type=\"text/javascript\" src=\""+fileName+"\"></script>"); 
}

/**
 * Retourne un objet XMLHttpRequest.
 */
function getHttpObject(){
	var result=null;
	if(window.XMLHttpRequest){
		result=new XMLHttpRequest(); 
		if(result.overrideMimeType)
			result.overrideMimeType("text/xml");
	}else if(window.ActiveXObject){
		try{
			result=new ActiveXObject("Msxml2.XMLHTTP");
		}catch(ex){
			result=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return result;
}

/**
 * Décode une chaine UTF8.
 */
function utf8_decode(str_data){
	var tmp_arr = [], i = 0, ac = 0, c1 = 0, c2 = 0, c3 = 0;
	str_data += '';
	while ( i < str_data.length ) {
		c1 = str_data.charCodeAt(i);
		if (c1 < 128) {
			tmp_arr[ac++] = String.fromCharCode(c1);
			i++;
		} else if ((c1 > 191) && (c1 < 224)) {
			c2 = str_data.charCodeAt(i+1);
			tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
			i += 2;
		} else {
			c2 = str_data.charCodeAt(i+1);
			c3 = str_data.charCodeAt(i+2);
			tmp_arr[ac++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
			i += 3;
		}
	}
	return tmp_arr.join('');
}

/**
 * Décode une chaine en base64.
 */
function base64_decode(data){
	var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
	var o1, o2, o3, h1, h2, h3, h4, bits, i = 0, ac = 0, dec = "", tmp_arr = [];
	if (!data) {
		return data;
	}
	data += '';
	do {  // unpack four hexets into three octets using index points in b64
		h1 = b64.indexOf(data.charAt(i++));
		h2 = b64.indexOf(data.charAt(i++));
		h3 = b64.indexOf(data.charAt(i++));
		h4 = b64.indexOf(data.charAt(i++));
		bits = h1<<18 | h2<<12 | h3<<6 | h4;
		o1 = bits>>16 & 0xff;
		o2 = bits>>8 & 0xff;
		o3 = bits & 0xff;
		if (h3 == 64) {
			tmp_arr[ac++] = String.fromCharCode(o1);
		} else if (h4 == 64) {
			tmp_arr[ac++] = String.fromCharCode(o1, o2);
		} else {
			tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
		}
	} while (i < data.length);
	dec = tmp_arr.join('');
	dec = this.utf8_decode(dec);
	return dec;
}

/**
 * Applique une ouverture en popup pour les liens ayant l'attribut rel="popup".
 */
function doJQRelPopup(){
	$("a[rel='popup']").click(function() {
		window.open(this.href);
		return false;
	});
}

/**
 * Décrypte et remplit tous les liens ayant l'attribut rel=email.
 */
function doJQRelMail(){
	$("a[rel='email']").each(function() {
		var email = $(this).attr("href");
		email = base64_decode(email.substr(7, email.length-7));
		email = email.substr(32, email.length-72);
		$(this).attr("href", "mailto:"+email);
		if($.trim($(this).html())=='')
			$(this).text(email);
	});
}

/**
 * Applique un style de centrage vertical sur les éléments de class "js-vertical-align".
 */
function doJQVerticalAlign(){
	$(".js-vertical-align").each(function(){
		var obj=$(this);
		var ah = obj.height();
		var ph = obj.parent().height();
		var mh = (ph - ah) / 2;
		obj.css("padding-top", mh);
	});
}

/**
 * Active le plugin "fix png" pour IE6.
 */
function doJQPngFix(){
	$('*').pngFix();
}

/**
 * Active la lightbox.
 */
function doJQLightBox(){
	$(function() {
		$("a[rel~=lightbox]").lightBox();
	});
}
/**
 * Initialise les variables globales d'environnement
 */
var _CURRENT_LANGUAGE=null;
var _DEFAULT_LANGUAGE=null;
var _LANGUAGE_LIST=null;
var _CURRENT_FILE=null;
var _SHORT_CURRENT_FILE=null;
function doJQWebSiteVariables(){
	_CURRENT_LANGUAGE=$('meta[name=wsb_current_language]').attr('content');
	_DEFAULT_LANGUAGE=$('meta[name=wsb_default_language]').attr('content');
	_LANGUAGE_LIST=$('meta[name=wsb_language_list]').attr('content');
	_CURRENT_FILE=$('meta[name=wsb_current_file]').attr('content');
	_SHORT_CURRENT_FILE=$('meta[name=wsb_short_current_file]').attr('content');
}
//------------------------------------------------------------------