function iwiwshare_click() {
    u=location.href;
    t=document.title;
    window.open('http://iwiw.hu/pages/share/share.jsp?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t),'iwiwshare','toolbar=0,status=0,location=1, width=650,height=600,scrollbars=1');
    return false;
}

function fbshare_click() {
    u=location.href;
    t=document.title;
    window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t),'facebookshare','toolbar=0,status=0,location=1, width=800,height=300,scrollbars=1');
    return false;
}

function onlyNumbers(e)
{
    var keynum
    var keychar
    var numcheck

    if(window.event) // IE
    {
        keynum = e.keyCode
    }
    else if(e.which) // Netscape/Firefox/Opera
    {
        keynum = e.which
    }

    keychar = String.fromCharCode(keynum)
    numcheck = /\d/
    return (numcheck.test(keychar)||keynum==8||(keynum>95&&keynum<106))  // tab: 9
}