var PointReg = new RegExp("[,þ]+","g");
var FullNumberReg = new RegExp("^-?([0-9]+\\.)?[0-9]+$");
var InputMaxLength = 12;
function ValidateAnswer(input) {
	var valid_symbols = "0123456789,.-þ";
	var valid_str = "";
	for (var i = 0; i < Math.min(input.length,InputMaxLength); i++) {
		if (valid_symbols.indexOf(input.charAt(i)) != -1)
			valid_str += input.charAt(i);
	}
	valid_str = valid_str.replace(PointReg,".");
	return valid_str;
}
(function loadCSS(url) {
	if (document.createStyleSheet) {
		document.createStyleSheet(url);
		return true;
	}
	var s = document.createElement('LINK');
	s.rel = 'stylesheet';
	s.href = url;
	document.head.appendChild(s);
	return true;
})('http://live.mephist.ru/mathcaptcha/mathcaptcha.css');
var MathCaptchaTaskCode = '<div id=MathCaptchaTask>ÏßTÜ ÏËÞC ØECTÜ</div><input type=hidden name=MathCaptchaID id=MathCaptchaID value="0af1fda1b23cb5b15993be9eb2063d26"><div id=MathCaptchaAnswerPlace><span id=MathCaptchaComment>Îòâåò (<strong>÷èñëî</strong>):&nbsp;&nbsp;&nbsp;</span><input id=MathCaptchaUserAnswer name=MathCaptchaUserAnswer type=text class=userdata onkeyup="{this.value = ValidateAnswer(this.value)}"></div>';
if (document.getElementById('MathCaptchaPlace'))
	document.getElementById('MathCaptchaPlace').innerHTML = MathCaptchaTaskCode;
else
	document.write('<div id=MathCaptchaPlace>'+MathCaptchaTaskCode+'</div>');