var Url = {

	// public method for url encoding
	encode : function (string) {
		return escape(this._utf8_encode(string));
	},

	// public method for url decoding
	decode : function (string) {
		return this._utf8_decode(unescape(string));
	},

	// private method for UTF-8 encoding
	_utf8_encode : function (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;
	},

	// private method for UTF-8 decoding
	_utf8_decode : function (utftext) {
		var string = "";
		var i = 0;
		var c = c1 = c2 = 0;

		while ( i < utftext.length ) {

			c = utftext.charCodeAt(i);

			if (c < 128) {
				string += String.fromCharCode(c);
				i++;
			}
			else if((c > 191) && (c < 224)) {
				c2 = utftext.charCodeAt(i+1);
				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				i += 2;
			}
			else {
				c2 = utftext.charCodeAt(i+1);
				c3 = utftext.charCodeAt(i+2);
				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				i += 3;
			}

		}

		return string;
	}

};

function loadImage(newimg, currentImgValue, id_ad)
{
  document.getElementById('fullimg').src=newimg;
}

function loadImageWithId(newimg, id)
{
  document.getElementById(id).src=newimg;
}

function loadZoomImage(newimg)
{
  document.getElementById('fullimg').src=newimg;
}
/* function for set max length in textarea */
function imposeMaxLength(Event, Object, MaxLen)
{
  return (Object.value.length < MaxLen)||(Event.keyCode == 8 ||Event.keyCode==46||(Event.keyCode>=35&&Event.keyCode<=40));
}

function addUrlParameter(parameter, value)
{
   //Get Query String from url
   fullQString = window.location.search.substring(1);
   
   paramCount = 0;
   queryStringComplete = "?";

   if(fullQString.length > 0)
   {
       //Split Query String into separate parameters
       paramArray = fullQString.split("&");
       
       //Loop through params, check if parameter exists.  
       for (i=0;i<paramArray.length;i++)
       {
         currentParameter = paramArray[i].split("=");
         if(currentParameter[0] == parameter) //Parameter already exists in current url
         {
            //don't include existing (will be appended to end of url)
         }
         else //Existing unrelated parameter
         {
            if(paramCount > 0)
               queryStringComplete = queryStringComplete + "&";
           
            queryStringComplete = queryStringComplete + paramArray[i];
            paramCount++;
         }
       }
   }
   
   //Add/Update query string if required.
   if(paramCount == 0)
       queryStringComplete = queryStringComplete + parameter + "=" + value;
   else
       queryStringComplete = queryStringComplete + "&" + parameter + "=" + value;
   
   window.location = self.location.protocol + '//' + self.location.host + self.location.pathname + queryStringComplete;
   
   
}