$(function() {
        $('.error').hide();
        $(".button").click(function() {
                $('.error').hide();

		var postid       = $("input#postid").val();
                var autor        = $("input#autor").val();
                var autor_email  = $("input#autor_email").val();
                var subject      = $("input#subject").val();
                var sender_name  = $("input#sender_name").val();
                var sender_email = $("input#sender_email").val();
		var captcha      = MD5($("input#captcha").val());
		var captcha2     = $("input#captcha2").val();
                var text         = $("textarea#text").val();

		var emailRegEx = /^[\w][\w\._\-]*@(?:[\w]+\.?)*[\w]\.[a-zA-Z]{2,4}$/ ;

		var carboncopy = 0;
		if (document.getElementById('carboncopy').checked == true) {
			carboncopy = 1;
		}

                if (sender_name == "") {
                        $("label#sender_name_error").show();
                        $("input#sender_name").focus();
                        return false;
                }

                if (sender_email.search(emailRegEx)==-1) {
                        $("label#sender_email_error").show();
                        $("input#sender_email").focus();
                        return false;
                }

                if (text == "") {
                        $("label#text_error").show();
                        $("textarea#text").focus();
                	return false;
                }
		if (captcha != captcha2) {
			$("label#captcha_error").show();
			$("input#captcha").focus();
			return false;
                }

		$("input#mf_submit").attr("disabled", "disabled");
		$("input#mf_submit").attr("value", "sende Feedback...");

                var dataString = '&autor='+ autor + '&autor_email='+ autor_email + '&sender_name='+ sender_name + '&sender_email=' + sender_email + '&text=' + URLEncode(text) + '&subject='+ subject + '&postid='+ postid + '&copy='+ carboncopy;
                //alert (dataString); return false;
                $.ajax({
                        type: "POST",
                        url: "/wp-content/plugins/mf-feedback/process.php",
                        data: dataString,
                        success: function() {
                                $('#feedback_form').html("<div id='message'></div>");
                                $('#message').html("<br /><br /><h3>Vielen Dank f&uuml;r dein Feedback!</h3>")
                                .append("<p>Das Feedback wurde an den Autor gesendet.</p><br />")
                                .hide()
                                .fadeIn(1500, function() {
                                        $('#message').append("");
                                });
                        }
                });
                return false;
        });
});

var MD5 = function (string) {
        function RotateLeft(lValue, iShiftBits) {
                return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
        }

        function AddUnsigned(lX,lY) {
                var lX4,lY4,lX8,lY8,lResult;
                lX8 = (lX & 0x80000000);
                lY8 = (lY & 0x80000000);
                lX4 = (lX & 0x40000000);
                lY4 = (lY & 0x40000000);
                lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
                if (lX4 & lY4) {
                        return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
                }
                if (lX4 | lY4) {
                        if (lResult & 0x40000000) {
                                return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
                        } else {
                                return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
                        }
                } else {
                        return (lResult ^ lX8 ^ lY8);
                }
        }

        function F(x,y,z) { return (x & y) | ((~x) & z); }
        function G(x,y,z) { return (x & z) | (y & (~z)); }
        function H(x,y,z) { return (x ^ y ^ z); }
        function I(x,y,z) { return (y ^ (x | (~z))); }

        function FF(a,b,c,d,x,s,ac) {
                a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
                return AddUnsigned(RotateLeft(a, s), b);
        };

        function GG(a,b,c,d,x,s,ac) {
                a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
                return AddUnsigned(RotateLeft(a, s), b);
        };

        function HH(a,b,c,d,x,s,ac) {
                a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
                return AddUnsigned(RotateLeft(a, s), b);
        };

        function II(a,b,c,d,x,s,ac) {
                a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
                return AddUnsigned(RotateLeft(a, s), b);
        };

        function ConvertToWordArray(string) {
                var lWordCount;
                var lMessageLength = string.length;
                var lNumberOfWords_temp1=lMessageLength + 8;
                var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
                var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
                var lWordArray=Array(lNumberOfWords-1);
                var lBytePosition = 0;
                var lByteCount = 0;
                while ( lByteCount < lMessageLength ) {
                        lWordCount = (lByteCount-(lByteCount % 4))/4;
                        lBytePosition = (lByteCount % 4)*8;
                        lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition));
                        lByteCount++;
                }
                lWordCount = (lByteCount-(lByteCount % 4))/4;
                lBytePosition = (lByteCount % 4)*8;
                lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
                lWordArray[lNumberOfWords-2] = lMessageLength<<3;
                lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
                return lWordArray;
        };

        function WordToHex(lValue) {
                var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
                for (lCount = 0;lCount<=3;lCount++) {
                        lByte = (lValue>>>(lCount*8)) & 255;
                        WordToHexValue_temp = "0" + lByte.toString(16);
                        WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
                }
                return WordToHexValue;
        };

        function Utf8Encode(string) {
                string = string.replace(/\r\n/g,"\n");
                var utftext = "";

                for (var n = 0; n < string.length; n++) {

                        var c = string.charCodeAt(n);

                        if (c < 128) {
                                utftext += String.fromCharCode(c);
                        }
                        else if((c > 127) && (c < 2048)) {
                                utftext += String.fromCharCode((c >> 6) | 192);
                                utftext += String.fromCharCode((c & 63) | 128);
                        }
                        else {
                                utftext += String.fromCharCode((c >> 12) | 224);
                                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                                utftext += String.fromCharCode((c & 63) | 128);
                        }

                }

                return utftext;
        };

        var x=Array();
        var k,AA,BB,CC,DD,a,b,c,d;
        var S11=7, S12=12, S13=17, S14=22;
        var S21=5, S22=9 , S23=14, S24=20;
        var S31=4, S32=11, S33=16, S34=23;
        var S41=6, S42=10, S43=15, S44=21;

        string = Utf8Encode(string);

        x = ConvertToWordArray(string);

        a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;

        for (k=0;k<x.length;k+=16) {
                AA=a; BB=b; CC=c; DD=d;
                a=FF(a,b,c,d,x[k+0], S11,0xD76AA478);
                d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
                c=FF(c,d,a,b,x[k+2], S13,0x242070DB);
                b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
                a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
                d=FF(d,a,b,c,x[k+5], S12,0x4787C62A);
                c=FF(c,d,a,b,x[k+6], S13,0xA8304613);
                b=FF(b,c,d,a,x[k+7], S14,0xFD469501);
                a=FF(a,b,c,d,x[k+8], S11,0x698098D8);
                d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
                c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
                b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
                a=FF(a,b,c,d,x[k+12],S11,0x6B901122);
                d=FF(d,a,b,c,x[k+13],S12,0xFD987193);
                c=FF(c,d,a,b,x[k+14],S13,0xA679438E);
                b=FF(b,c,d,a,x[k+15],S14,0x49B40821);
                a=GG(a,b,c,d,x[k+1], S21,0xF61E2562);
                d=GG(d,a,b,c,x[k+6], S22,0xC040B340);
                c=GG(c,d,a,b,x[k+11],S23,0x265E5A51);
                b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
                a=GG(a,b,c,d,x[k+5], S21,0xD62F105D);
                d=GG(d,a,b,c,x[k+10],S22,0x2441453);
                c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
                b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
                a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
                d=GG(d,a,b,c,x[k+14],S22,0xC33707D6);
                c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
                b=GG(b,c,d,a,x[k+8], S24,0x455A14ED);
                a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
                d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
                c=GG(c,d,a,b,x[k+7], S23,0x676F02D9);
                b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
                a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
                d=HH(d,a,b,c,x[k+8], S32,0x8771F681);
                c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
                b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
                a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
                d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
                c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
                b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
                a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
                d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
                c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
                b=HH(b,c,d,a,x[k+6], S34,0x4881D05);
                a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
                d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
                c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
                b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
                a=II(a,b,c,d,x[k+0], S41,0xF4292244);
                d=II(d,a,b,c,x[k+7], S42,0x432AFF97);
                c=II(c,d,a,b,x[k+14],S43,0xAB9423A7);
                b=II(b,c,d,a,x[k+5], S44,0xFC93A039);
                a=II(a,b,c,d,x[k+12],S41,0x655B59C3);
                d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
                c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
                b=II(b,c,d,a,x[k+1], S44,0x85845DD1);
                a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
                d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
		c=II(c,d,a,b,x[k+6], S43,0xA3014314);
                b=II(b,c,d,a,x[k+13],S44,0x4E0811A1);
                a=II(a,b,c,d,x[k+4], S41,0xF7537E82);
                d=II(d,a,b,c,x[k+11],S42,0xBD3AF235);
                c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
                b=II(b,c,d,a,x[k+9], S44,0xEB86D391);
                a=AddUnsigned(a,AA);
                b=AddUnsigned(b,BB);
                c=AddUnsigned(c,CC);
                d=AddUnsigned(d,DD);
        }

        var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);

        return temp.toLowerCase();
}

function URLEncode(url) {
	var SAFECHARS = "0123456789" + // Numeric
			"ABCDEFGHIJKLMNOPQRSTUVWXYZ" + // Alphabetic
			"abcdefghijklmnopqrstuvwxyz" +
			"-_.!~*'()"; // RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";

	var plaintext = url;
	var encoded = "";
	for (var i = 0; i < plaintext.length; i++ ) {
		var ch = plaintext.charAt(i);
		if (ch == " ") {
			encoded += "+"; // x-www-urlencoded, rather than %20
		} else if (SAFECHARS.indexOf(ch) != -1) {
			encoded += ch;
		} else {
			var charCode = ch.charCodeAt(0);
			if (charCode > 255) {
				//alert( "Unicode Character '"
				//	+ ch
				//	+ "' cannot be encoded using standard URL encoding.\n" +
				//	"(URL encoding only supports 8-bit characters.)\n" +
				//	"A space (+) will be substituted." );
				encoded += "+";
			} else {
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			}
		}
	}
	return encoded;
};