var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
try {
var pageTracker = _gat._getTracker("UA-9512201-2");
pageTracker._trackPageview();
} catch(err) {}

window.setInterval('changeColor();',250);
function changeColor()
{
var kolor=document.getElementById("kursor").style.color
if(kolor!="#ffffff" && kolor!="rgb(255, 255, 255)"){
document.getElementById("kursor").style.color="#ffffff";
}
else
document.getElementById("kursor").style.color="#333333";
}


function valid_mail(){
        var dobryEmail=/^[0-9a-zA-Z.-_]+\@[0-9a-zA-Z.-_]+\.[0-9a-zA-Z.]{2,3}$/;
        if(!dobryEmail.test(document.mail_form.nadawca.value))
                alert("Podałeś błędny adres e-mail.");
        else if(document.mail_form.tresc.value)
			document.mail_form.submit();
    return false;
}