function spr() {
if(document.news.accept.checked)
{
document.news.accept.checked = true;
document.news.email_news.disabled = false;
document.news.b.disabled = false;
}
else
{
if(!document.news.accept.checked)
{
document.news.accept.checked = false;
document.news.email_news.disabled = true;
document.news.b.disabled=true;
}
}
}

function checkNEmail(form) {
	if (isBlank(form.email_news.value)  || !isEmailValid(form.email_news.value) ) 
	{
		alert("Wpisz poprawny adres e-mail.");
		form.email.focus();
		return false;
	}
	}

function checkEmail(form) {
	if (isBlank(form.email_news.value) || !isEmailValid(form.email_news.value) ) {
		alert("Wpisz poprawny adres e-mail.");
		form.email_news.focus();
		return false;
	}
return true;

}

function isBlank(fieldValue) {
	var blankSpaces = / /g;
	fieldValue = fieldValue.replace(blankSpaces, "");
	return (fieldValue == "") ? true : false;
}

function isEmailValid(fieldValue) {
	var emailFilter = /^.+@.+\..{2,4}$/;
	var atSignFound = 0;
	for (var i = 0; i <= fieldValue.length; i++)
		if ( fieldValue.charAt(i) == "@" )
			atSignFound++;
	if ( atSignFound > 1 )
		return false;
	else
		return ( emailFilter.test(fieldValue) && !doesEmailHaveInvalidChar(fieldValue) ) ? true : false;
}

function doesEmailHaveInvalidChar(fieldValue) {
	var illegalChars = /[\(\)\<\>\,\;\:\\\/\"\[\] ]/;
	return ( illegalChars.test(fieldValue) ) ? true : false;
}