// JScript File

function checkTextAreaMaxLength(textBox,e, length)
{    
  var mLen = textBox["MaxLength"];
  if(null==mLen)
     mLen=length;
    
  if( e.keyCode != 8 )
  {
    var maxLength = parseInt(mLen);
    if( !IsSpecialKeys(e) )
    {
      if(textBox.value.length > maxLength-1)
      {
        if(window.event)//IE
          e.returnValue = false;
        else//Firefox
           e.preventDefault();
      }
    }
    else
    {  
        if(window.event)//IE
          e.returnValue = false;
        else//Firefox
           e.preventDefault();  
    } 
  }
}

function IsSpecialKeys(e)
{
  if( e.keyCode ==13 || e.keyCode==9 )
    return true;
  else
    return false;
}

function ReplaceSpecials(bron) {
    var resultaat = bron.replace(/##1/gi, "'").replace(/##2/gi, "'");
    return resultaat;
}

var keyStr = "ABCDEFGHIJKLMNOP" +
	               "QRSTUVWXYZabcdef" +
	               "ghijklmnopqrstuv" +
	               "wxyz0123456789+/" +
	               "=";

function encode64(input) 
{
  input = escape(input);
  var output = "";
  var chr1, chr2, chr3 = "";
  var enc1, enc2, enc3, enc4 = "";
  var i = 0;
	 
  do {
    chr1 = input.charCodeAt(i++);
    chr2 = input.charCodeAt(i++);
    chr3 = input.charCodeAt(i++);
	 
    enc1 = chr1 >> 2;
    enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
    enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
    enc4 = chr3 & 63;

    if (isNaN(chr2)) 
    {
	  enc3 = enc4 = 64;
    }
    else if (isNaN(chr3)) 
    {
	  enc4 = 64;
    }
	 
    output = output +
	  keyStr.charAt(enc1) +
  	  keyStr.charAt(enc2) +
 	  keyStr.charAt(enc3) +
 	  keyStr.charAt(enc4);
    chr1 = chr2 = chr3 = "";
    enc1 = enc2 = enc3 = enc4 = "";
  } while (i < input.length);
	 
  return output;
}

function decode64(input) 
{
  var output = "";
  var chr1, chr2, chr3 = "";
  var enc1, enc2, enc3, enc4 = "";
  var i = 0;
	 
	// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
  var base64test = /[^A-Za-z0-9\+\/\=]/g;
  if (base64test.exec(input)) {
  alert("There were invalid base64 characters in the input text.\n" +
	        "Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" +
	        "Expect errors in decoding.");
  }
  input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
	 
  do {
	enc1 = keyStr.indexOf(input.charAt(i++));
	enc2 = keyStr.indexOf(input.charAt(i++));
	enc3 = keyStr.indexOf(input.charAt(i++));
	enc4 = keyStr.indexOf(input.charAt(i++));
	 
	chr1 = (enc1 << 2) | (enc2 >> 4);
	chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
	chr3 = ((enc3 & 3) << 6) | enc4;
	 
    output = output + String.fromCharCode(chr1);
	 
	if (enc3 != 64) {
	    output = output + String.fromCharCode(chr2);
	}
	if (enc4 != 64) {
	    output = output + String.fromCharCode(chr3);
	}
	 
	chr1 = chr2 = chr3 = "";
	enc1 = enc2 = enc3 = enc4 = "";
	 
  } while (i < input.length);
	 
  return unescape(output);
}

IsEmptyGuid = function (bron) {
  return (bron == '{00000000-0000-0000-0000-000000000000}') || (bron == '00000000-0000-0000-0000-000000000000');
}

MaakEmptyGuid = function () {
  return '{00000000-0000-0000-0000-000000000000}';
}

function MaakGuid() {
    var S4 = function () {
        return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
    };
    return (S4() + S4() + "-" + S4() + "-" + S4() + "-" + S4() + "-" + S4() + S4() + S4());
  }

  function trim(str, chars) {
    return ltrim(rtrim(str, chars), chars);
  }

  function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
  }

  function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
  }