emmapp.url = {		 
	// public method for url encoding
	encode : function (string) {
		if ( !dojo.isString(string) ) {
			return string;
		}
		
		return escape(this._utf8_encode(string));
	},
 
	// public method for url decoding
	decode : function (string) {
		if ( !dojo.isString(string) ) {
			return 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;
	},
 
	addParameters: function(url, parName1, parValue1, parName2, parValue2, parName3, parValue3, parName4, parValue4) {
		url = this.removeParameter(url, parName1);
		if ( parName2 ) {
			url = this.removeParameter(url, parName2);			
		}
		if ( parName3 ) {
			url = this.removeParameter(url, parName3);			
		}
		if ( parName4 ) {
			url = this.removeParameter(url, parName4);			
		}
		
		if ( url.indexOf("?") > 0 ) {
			url = url + "&";
		} else {
			url = url + "?";
		}
		
		url = url + parName1 + "=" + this.encode(parValue1);
		
		if ( parName2 ) {
			url = url + "&" + parName2 + "=" + this.encode(parValue2);
		}
		
		if ( parName3 ) {
			url = url + "&" + parName3 + "=" + this.encode(parValue3);
		}
		
		if ( parName4 ) {
			url = url + "&" + parName4 + "=" + this.encode(parValue4);
		}
		
		return url;
	},
	
	removeParameter:function(url,parName){
		
		if ( url.indexOf(parName) < 0 ) {
			return url;
		}
		
		var idx = url.indexOf("?");
		if ( idx < 0) {
			return url;
		}
		
		var queryStr = url.substring(idx+1);
		var reg = new RegExp("(([^=]+?)=([^&]*?)(&|$))","gi");
		var tempArray = queryStr.match(reg);
		
		for(var i=0; i<tempArray.length; i++){
			var r = tempArray[i];
			var array = r.split("=");
			if(array[0] == parName){
				url = url.replace(r,"");	
			}
		}
		
		if(url.charAt(url.length-1) == '?' || url.charAt(url.length-1) == '&') {
			url = url.substring(0,url.length -1);
		}
		return url;
	},
	
	getParameter: function(url,parName) {
		var queryStr = "";
		var idx = url.indexOf("?");
		if ( idx > -1) {
			queryStr = url.substring(idx+1);
		}
		var reg = new RegExp("(([^=]+?)=([^&]*?)(&|$))","gi");
		var result = "";
		
		var tempArray = queryStr.match(reg);
		if ( null != tempArray){
			for(var i=0; i<tempArray.length; i++){
				var r = tempArray[i];
				var array = r.split("=");
				if(array[0] == parName){
					if(result.length > 0){
						result = result + ",";
					}
					if( array[1].charAt(array[1].length-1) == '&' ) {
						array[1] = array[1].substring(0,array[1].length -1);
					}
					result = result +array[1];
				}
			}
		}
		return result;
	},
	
	havaSomeParameter: function(url,parName) {
		var queryStr = "";
		var idx = url.indexOf("?");
		if ( idx > -1) {
			queryStr = url.substring(idx+1);
		}else{
			return false;
		}
		var reg = new RegExp("(([^=]+?)=([^&]*?)(&|$))","gi");

		var tempArray = queryStr.match(reg);
		for(var i=0; i<tempArray.length; i++){
			if( parName == tempArray[i]){
				return true;
			}
		}
		return false;
	},
	
	addPageKey: function(url) {
		return this.addParameters(url, "pagekey", emmapp.page.pageKey);	
	},
	
	addParentPagekey: function(url) {
		return this.addParameters(url, "parentPagekey", emmapp.page.pageKey);	
	},
	
	addActionPageKey: function(url, actionPageKey) {
		return this.addParameters(url, "actionPageKey", actionPageKey);	
	},
	
	addContentOnly: function(url) {
		return this.addParameters(url, "contentOnly", "true");	
	},
	
	addAutoAjax: function(url) {
		return this.addParameters(url, "autoajax", "true");	
	},
	
	addStandaloneAjax: function(url) {
		return this.addParameters(url, "standaloneajax", "true");	
	}
	

		
		
};