function warning()
{
    document.write('<div id="pre_warning" style="position:absolute;top:0px;left:0px;width:102%;height:100%;background-color:#ffffff;position: fixed;_position: absolute;_top:expression(document.body.scrollTop+document.body.clientHeight-this.clientHeight);filter:alpha(opacity=90);opacity: 0.9;-moz-opacity:0.9;"></div><div id="warning" style="position:absolute;top:0px;left:0px;width:100%;height:100%;position: fixed;_position: absolute;_top:expression(document.body.scrollTop+document.body.clientHeight-this.clientHeight);filter:alpha(opacity=100);opacity: 1.0;-moz-opacity:1.0;"><table width="100%" height="100%"><tr><td align="center" valign="middle"><table style="width:640px; height:400px; border:1px solid #cccccc; background-color:#ffffff;"><tr><td align="center" valign="middle"><font style="font-size: 13pt; font-weight:bold; color: red;">Strona tylko dla dorosłych!</font><br><br><font style="font-size: 11pt; color: red;">Strona zawiera treści o tematyce erotycznej.<br>Jeśli nie masz ukończonych 18 lat, natychmiast opuść tę stronę.</font><br><br><table cellspacing="0" cellpadding="0"><tr><td><input type="checkbox" id="warningBox"></td><td>&nbsp;</td><td nowrap><a href="#" onclick="document.getElementById(\'warningBox\').checked ^= 1; return false;" style="color:black; text-decoration:none;">Mam ukończone 18 lat, nie pokazuj tego ostrzeżenia w przyszłości.</a></td></tr></table><br><br><a href="#" onclick="warning_letmein(\'Potwierdź, że masz ukończone 18 lat!\'); return false;" style="color:black; font-weight:bold; font-size: 13pt; text-decoration:none;">Wchodzę</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://www.google.pl" style="color:black; font-weight:bold; font-size: 13pt; text-decoration:none;">Rezygnuję</a></td></tr></table></td></tr></table></div>');
}

function warning_letmein(not_checked)
{
    if(document.getElementById('warningBox').checked)
    {
	warning_setcookie('warning',30);
	document.getElementById('warning').style.visibility = 'hidden';
	document.getElementById('pre_warning').style.visibility = 'hidden';
    }
    else alert(not_checked);
}

function warning_setcookie(cookieName,nDays)
{
    var today = new Date();
    var expire = new Date();
    if (nDays==null || nDays==0) nDays=1;
    expire.setTime(today.getTime() + 3600000*24*nDays);
    document.cookie = cookieName+"=1; expires="+expire.toGMTString() + "; path=/";
}

function warning_getcookie(name)
{
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) 
    {
	begin = dc.indexOf(prefix);
	if (begin != 0) return null;
    }
    else
    {
	begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
    {
	end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}

