var http_request = false;

function makePOSTRequest(url, parameters) {
	http_request = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			// set type accordingly to anticipated content type
			//http_request.overrideMimeType('text/xml');
			http_request.overrideMimeType('text/html');
		}
	}
	else if (window.ActiveXObject) { // check if IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {}
		}
	}
	if (!http_request) {
		window.alert('Ne mogu pozvati XMLHTTP modul.');
		return false;
	}
	
	http_request.onreadystatechange = alertContents;
	http_request.open('POST', url, true);
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http_request.setRequestHeader("Content-length", parameters.length);
	http_request.setRequestHeader("Connection", "close");
	http_request.send(parameters);
}


function alertContents() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			result = http_request.responseText;
			if(result=="1") {
                checkedCaptcha();
                eraseCookie('user_nadimak');
                createCookie('user_nadimak', document.moj_recept.nadimak.value, 365);
                eraseCookie('user_email');
                createCookie('user_email', document.moj_recept.email.value, 365);
                eraseCookie('user_www');
                createCookie('user_www', document.moj_recept.www.value, 365);
				document.moj_recept.submit();
			}
			else {
				checkedCaptcha();
				document.capt_img.src='http://www.sendvic.com/skripte/captcha/captcha_img.php?rand='+Math.round(Math.random()*10);
                document.moj_recept.capt.value = '';
                document.moj_recept.capt.focus();
				window.alert('Prikazani sigurnosni kod nije tocno prepisan.\nMolimo ponovite sa nove slike.');
			}
		}
		else {
        	checkedCaptcha();
			window.alert('Doslo je do greske.');
		}
	}
}

function get(obj) {
	var poststr = "o=provjeri-captcha" + "&capt=" + encodeURIComponent(document.moj_recept.capt.value);
	makePOSTRequest('http://www.sendvic.com/sendvic.php', poststr);
}