function isEmailValid(emailstring) {
	if (!emailstring.match(/^[a-z0-9+]{1}[a-z_0-9-\.]*@[a-z0-9]{1}[a-z0-9-]*(\.[a-z0-9]{1}[a-z0-9-]*)+$/gi)) {
		return false;
	}
	return true;
}

function jstrim(s) {
    return s.replace(/(^\s+)|(\s+$)/g, "");
}

function open_popup(_url,_width, _height) {
    if (_width<1) { _width = 300; }
    if (_height<1) { _height = 300; }
    window.open(_url,'popupwin','status=no,width='+(_width+20)+',height='+(_height+20)+',screenX=50,screenY=50,left=50,top=50,scrollbars=yes,resizable=yes');
}

function popup_grafika(_id, _width, _height, _abs, _lg) {
    if (_width<1) { _width = 300; }
    if (_height<1) { _height = 300; }
    window.open(_abs+'popup_grafika.php/'+_lg+'/popup/'+_id,'','status=no,width='+(_width+40)+',height='+(_height+40)+',screenX=50,screenY=50,left=50,top=50,scrollbars=yes,resizable=yes');
}

function openwindow(strona,width,height) {
}


function wyslijZnajomemu(_abs, article, lang) {
    var strona = _abs+'sendToFriend1.php/'+lang+'/'+article;
    var width = 330;
    var height = 240;
    var wzwin = null;
    if (navigator.appName == "Microsoft Internet Explorer") {
        wzwin = window.open(String(strona), 'wzWin', "toolbar=no,menubar=no,scrollbars=auto,resizable=yes,status=no,location=no,directories=no,fullscreen=no,titlebar=no,width=" + String(width) + ",height=" + String(height));
    } else {
        wzwin = window.open(String(strona), 'wzWin', "toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,innerWidth=" + String(width) + ",innerHeight=" + String(height));
    }
    wzwin.focus();
}


DayName = new Array(7)
DayName[0] = "niedziela"
DayName[1] = "poniedziałek"
DayName[2] = "wtorek"
DayName[3] = "środa"
DayName[4] = "czwartek"
DayName[5] = "piątek"
DayName[6] = "sobota"

MonthName = new Array(12)
MonthName[0] = "stycznia "
MonthName[1] = "lutego "
MonthName[2] = "marca "
MonthName[3] = "kwietnia "
MonthName[4] = "maja "
MonthName[5] = "czerwca "
MonthName[6] = "lipca "
MonthName[7] = "sierpnia "
MonthName[8] = "wrzeœnia "
MonthName[9] = "października "
MonthName[10] = "listopada "
MonthName[11] = "grudnia "

function getDateStr(){
    var Today = new Date()
    var WeekDay = Today.getDay()
    var Month = Today.getMonth()
    var Day = Today.getDate()
    var Year = Today.getFullYear()

    if(Year <= 99)
        Year += 1900

    return DayName[WeekDay] + ", " + " " + Day + " " + MonthName[Month] + " " + Year
}



function date_diff(d,o,t,x){return[x=~~(t=(d-o)/864e5),x=~~(t=(t-x)*24), x=~~(t=(t-x)*60),~~((t-x)*60)]}