// UČITAVA PARAMETRE POTREBNE ZA POST SLIKE !!!
function setForm(option, view, query) {
	var form = $g("form");
	if(query == undefined ) {query = "";}
	form.setAttribute("target","_self");
	form.setAttribute("action", "/"+ $g("Language_kontrola").value +"/"+ option +"/"+ view +".html"+ query);
	form.setAttribute("method","post");
	form.setAttribute("enctype","multipart/form-data");
	form.setAttribute("encoding","multipart/form-data");
}
// COUNTER FIELD FOR TEXT
function textCounter( field, countfield, maxlimit ) {
  if ( field.value.length > maxlimit ) {
    field.value = field.value.substring( 0, maxlimit );
    al( 'Maksimalan broj karaktera je: '+ maxlimit );
    return false;
  }
  else  {
    countfield.value = maxlimit - field.value.length;
  }
}
// BRIŠE UNUTAR ELEMENTA
function obrisiSve(id) {
	var parent = document.getElementById(id);
	while(parent.hasChildNodes()) {
		parent.removeChild(parent.firstChild);
	}
}
// getElementById.innerHTML SKRAĆENO
function $g(id) {
  return document.getElementById(id);
}
// ALERT SKRAĆENO
function al(string) {
  alert(string);
}
//IZMENA ELEMENTA
function elementObrisi(str) {			
	if(navigator.appName == 'Microsoft Internet Explorer') {	
		document.getElementById(str).removeNode(true);
	}
	else {
		document.getElementById(str).innerHTML = "";		
	}
}
//UČITAVANJE
function ucitavanje(id) {
	// id je pozicijaGlobal ali da ne bi došlo do sudaranja sa nekom drugom pozvanom funkcijom...
	$g(id).innerHTML = "<select class='"+ id +"'><option> --- </option></select>";
}
//TRIM
function trim(str) {
	return str.replace(/(^[\s\xA0]+|[\s\xA0]+$)/g, '');
}
//PRONADJI STRING
function prebroji_karakter(str1, str2) {
 	var brojac=0;
   for (i = 0; i < str1.length; i++) { 
      if (str1.charAt(i) == str2) {
			brojac++;
		}
	}
	return brojac;
}
//CAPTCHA PROVERA - koristi se kod logovanja, registracije i izmene podataka
function checkCaptcha() {
	if($g("Captcha_kontrola").value && $g("Captcha").value) {
		if($g("Captcha_kontrola").value === MD5($g("Captcha").value)) {
			return true;
		}
		else {
			al(NISTE_UPISALI_CAPTCHA_TACAN);
			return false;		
		}
	}
	else {
		al(NISTE_UPISALI_CAPTCHA);
		return false;
	}
	return false;
}
//SLUCAJAN BROJ
function slucajanBroj() {
	var broj = Math.floor(Math.random()*999999);
	var vreme = new Date();
	var mikro_sekunde = vreme.getTime();
	return broj +  mikro_sekunde;
}
// EMAIL PROVERA
function checkEmailUnique() { 
	var email = emailProvera($g("Email").value);
	if (email == false) {return false;}
	xmlHttp_email_check=GetXmlHttpObject();	
	var url = setLink("user/email_check.html?Ajax=ajax");
	var params_email_check = "Email="+ email;
	xmlHttp_email_check.onreadystatechange = email_check_state_changed
	xmlHttp_email_check.open("POST",url,true)			
	xmlHttp_email_check.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp_email_check.setRequestHeader("Content-length", params_email_check.length);
	xmlHttp_email_check.setRequestHeader("Connection", "close");
	xmlHttp_email_check.send(params_email_check);
}
function email_check_state_changed() { 
	if(xmlHttp_email_check.readyState==4 || xmlHttp_email_check.readyState=="complete") {	
		if(xmlHttp_email_check.responseText) {
			$g("email_check").innerHTML = xmlHttp_email_check.responseText;
			if(xmlHttp_email_check.responseText.length > 1) { $g("email_check").className = "warning"; }
			else { $g("email_check").className = ""; }			
		}
		else {
			$g("email_check").innerHTML = "";
			$g("email_check").className = "";
		}
	}
}
function emailProvera(string) {
	var email = trim(string);
	if(email.length>0) {		
		var regex = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;
		var email_test = regex.test(email);
		if(email_test==false) {
			al('Email adresa: ' + string + ' nije validna!');
			return false;
		}
		return email;
	}
	al(NISTE_UPISALI_EMAIL);	
	return false;

}
//PASSWORD PROVERA
function checkPasswordRetype(new_pass1, new_pass2) {
	if (new_pass1 == false) {
		al(NISTE_UPISALI_PASSWORD);
		return false;
	}	
	if (new_pass1 !== new_pass2) {
		al(NISTE_UPISALI_PASSWORD_ISTI);
		return false;
	}	
	return true;
}
function checkNewPassword(email, new_pass1, new_pass2) {
	if(new_pass1.length < 4 || new_pass1.length > 16) {
		al(PASSWORD_NEISPRAVAN_DUZINA);
		return false;
	}
	var regex = /^[\w._-]+$/;		
	var test = regex.test(new_pass1);
	if(test==false) {
		al(PASSWORD_NEISPRAVAN_KARAKTER);
		return false;
	}

	var test_string = new_pass1.search(email);		
	if(test_string != -1) {
		al(PASSWORD_NEISPRAVAN_EMAIL);
		return false;
	}

	var test_string = email.search(new_pass1);		
	if(test_string != -1) {
		al(PASSWORD_NEISPRAVAN_EMAIL);
		return false;
	}	
	return true;
}
function MD5(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();
}