};

    var postData = '_method=delete';

    var sUrl = url.replace('__NOTIFICATION_ID__',notification_id);

    var request = YAHOO.util.Connect.asyncRequest('POST', sUrl, 

    											  callback, postData);

};	

var readNotification = function(url, notification_id,callbacks){

    var callback = { 

		success:function(o){

		    var obj = YUD.get(String("notification_"+notification_id));

		    YUD.removeClass(obj, 'unread');

		    var r_button = obj.children[0].getElementsByClassName('read-notification')[0]

		    if(r_button.parentNode !== undefined){

		    	r_button.parentNode.removeChild(r_button);

			}		    

			_run_callbacks(callbacks);

		},

	    failure:function(o){

	        alert("error");

	    },

	};

    var postData = '_method=put';

    var sUrl = url.replace('__NOTIFICATION_ID__',notification_id);

    var request = YAHOO.util.Connect.asyncRequest('POST', sUrl, 

    											  callback, postData);

};	

/** MEMBERS AUTOCOMPLETE WIDGET **/

var MembersAutoComplete = function (users_list, groups_list) {

    var myUsers = users_list;

    var myGroups = groups_list;

    // Define a custom search function for the DataSource of users

    var matchUsers = function (sQuery) {

            // Case insensitive matching

            var query = sQuery.toLowerCase();

            var i = 0;

            var l = myUsers.length;

            var matches = [];

            // Match against each name of each contact

            for (; i < l; i++) {

                contact = myUsers[i];

                if (((contact.fname+"").toLowerCase().indexOf(query) > -1) || 

                   	 ((contact.lname+"").toLowerCase().indexOf(query) > -1) || 

                   	 ((contact.nname) && ((contact.nname).toLowerCase().indexOf(query) > -1))) {

                       matches[matches.length] = contact;

                   }

            }

            return matches;

        };

    // Define a custom search function for the DataSource of usersGroups

    var matchGroups = function (sQuery) {

            // Case insensitive matching

            var query = sQuery.toLowerCase();

            var i = 0;

            var l = myGroups.length;

            var matches = [];

            // Match against each name of each contact

            for (; i < l; i++) {

                matched_group = myGroups[i];

                if (matched_group.grname.toLowerCase().indexOf(query) > -1) {

                    matches[matches.length] = matched_group;

                }

            }

            return matches;

        };

    //match all

    var matchAll = function (sQuery) {

            u = matchUsers(sQuery);

            g = matchGroups(sQuery);

            return u.concat(g);

        };

    // DataScheme for members

    var memberDS = new YAHOO.util.FunctionDataSource(matchAll);

    memberDS.responseSchema = {

        fields: ["id", "fname", "lname", "nname", "grname", "grmembers", "gravatar_lnk"]

    };

    // DataScheme for owner

    var ownerDS = new YAHOO.util.FunctionDataSource(matchUsers);

    ownerDS.responseSchema = {

        fields: ["id", "fname", "lname", "nname", "gravatar_lnk"]

    };

    // Instantiate AutoComplete for perms

    var membersAC = new YAHOO.widget.AutoComplete("perm_new_member_name", "perm_container", memberDS);

    membersAC.useShadow = false;

    membersAC.resultTypeList = false;

    // Instantiate AutoComplete for owner

    var ownerAC = new YAHOO.widget.AutoComplete("user", "owner_container", ownerDS);

    ownerAC.useShadow = false;

    ownerAC.resultTypeList = false;

    // Helper highlight function for the formatter

    var highlightMatch = function (full, snippet, matchindex) {

            return full.substring(0, matchindex) 

            + "<span class='match'>" 

            + full.substr(matchindex, snippet.length) 

            + "</span>" + full.substring(matchindex + snippet.length);

        };

    // Custom formatter to highlight the matching letters

    var custom_formatter = function (oResultData, sQuery, sResultMatch) {

            var query = sQuery.toLowerCase();

            var _gravatar = function(res, em, group){

            	if (group !== undefined){

            		em = '/images/icons/group.png'

            	}

            	tmpl = '<div class="ac-container-wrap"><img class="perm-gravatar-ac" src="{0}"/>{1}</div>'

            	return tmpl.format(em,res)

            }

            // group

            if (oResultData.grname != undefined) {

                var grname = oResultData.grname;

                var grmembers = oResultData.grmembers;

                var grnameMatchIndex = grname.toLowerCase().indexOf(query);

                var grprefix = "{0}: ".format(_TM['Group']);

                var grsuffix = " (" + grmembers + "  )";

                var grsuffix = " ({0}  {1})".format(grmembers, _TM['members']);

                if (grnameMatchIndex > -1) {

                    return _gravatar(grprefix + highlightMatch(grname, query, grnameMatchIndex) + grsuffix,null,true);

                }

			    return _gravatar(grprefix + oResultData.grname + grsuffix, null,true);

            // Users

            } else if (oResultData.nname != undefined) {

                var fname = oResultData.fname || "";

                var lname = oResultData.lname || "";

                var nname = oResultData.nname;

                // Guard against null value

                var fnameMatchIndex = fname.toLowerCase().indexOf(query),

                    lnameMatchIndex = lname.toLowerCase().indexOf(query),

                    nnameMatchIndex = nname.toLowerCase().indexOf(query),

                    displayfname, displaylname, displaynname;

                if (fnameMatchIndex > -1) {

                    displayfname = highlightMatch(fname, query, fnameMatchIndex);

                } else {

                    displayfname = fname;

                }

                if (lnameMatchIndex > -1) {

                    displaylname = highlightMatch(lname, query, lnameMatchIndex);

                } else {

                    displaylname = lname;

                }

                if (nnameMatchIndex > -1) {

                    displaynname = "(" + highlightMatch(nname, query, nnameMatchIndex) + ")";

                } else {

                    displaynname = nname ? "(" + nname + ")" : "";

                }

                return _gravatar(displayfname + " " + displaylname + " " + displaynname, oResultData.gravatar_lnk);

            } else {

                return '';

            }

        };

    membersAC.formatResult = custom_formatter;

    ownerAC.formatResult = custom_formatter;

    var myHandler = function (sType, aArgs) {

            var myAC = aArgs[0]; // reference back to the AC instance

            var elLI = aArgs[1]; // reference to the selected LI element

            var oData = aArgs[2]; // object literal of selected item's result data

            //fill the autocomplete with value

            if (oData.nname != undefined) {

                //users

                myAC.getInputEl().value = oData.nname;

                YUD.get('perm_new_member_type').value = 'user';

            } else {

                //groups

                myAC.getInputEl().value = oData.grname;

                YUD.get('perm_new_member_type').value = 'users_group';

            }

        };

    membersAC.itemSelectEvent.subscribe(myHandler);

    if(ownerAC.itemSelectEvent){

    	ownerAC.itemSelectEvent.subscribe(myHandler);

    }

    return {

        memberDS: memberDS,

        ownerDS: ownerDS,

        membersAC: membersAC,

        ownerAC: ownerAC,

    };

}

var MentionsAutoComplete = function (divid, cont, users_list, groups_list) {

    var myUsers = users_list;

    var myGroups = groups_list;

    // Define a custom search function for the DataSource of users

    var matchUsers = function (sQuery) {

    	    var org_sQuery = sQuery;

    	    if(this.mentionQuery == null){

    	    	return []    	    	

    	    }

    	    sQuery = this.mentionQuery;

            // Case insensitive matching

            var query = sQuery.toLowerCase();

            var i = 0;

            var l = myUsers.length;

            var matches = [];

            // Match against each name of each contact

            for (; i < l; i++) {

                contact = myUsers[i];

                if (((contact.fname+"").toLowerCase().indexOf(query) > -1) || 

                	 ((contact.lname+"").toLowerCase().indexOf(query) > -1) || 

                	 ((contact.nname) && ((contact.nname).toLowerCase().indexOf(query) > -1))) {

                    matches[matches.length] = contact;

                }

            }

            return matches

        };

    //match all

    var matchAll = function (sQuery) {

            u = matchUsers(sQuery);

            return u

        };

    // DataScheme for owner

    var ownerDS = new YAHOO.util.FunctionDataSource(matchUsers);

    ownerDS.responseSchema = {

        fields: ["id", "fname", "lname", "nname", "gravatar_lnk"]

    };

    // Instantiate AutoComplete for mentions

    var ownerAC = new YAHOO.widget.AutoComplete(divid, cont, ownerDS);

    ownerAC.useShadow = false;

    ownerAC.resultTypeList = false;

    ownerAC.suppressInputUpdate = true;

    // Helper highlight function for the formatter

    var highlightMatch = function (full, snippet, matchindex) {

            return full.substring(0, matchindex) 

            + "<span class='match'>" 

            + full.substr(matchindex, snippet.length) 

            + "</span>" + full.substring(matchindex + snippet.length);

        };

    // Custom formatter to highlight the matching letters

    ownerAC.formatResult = function (oResultData, sQuery, sResultMatch) {

		    var org_sQuery = sQuery;

		    if(this.dataSource.mentionQuery != null){

		    	sQuery = this.dataSource.mentionQuery;		    	

		    }

            var query = sQuery.toLowerCase();

            var _gravatar = function(res, em, group){

            	if (group !== undefined){

            		em = '/images/icons/group.png'

            	}

            	tmpl = '<div class="ac-container-wrap"><img class="perm-gravatar-ac" src="{0}"/>{1}</div>'

            	return tmpl.format(em,res)

            }

            if (oResultData.nname != undefined) {

                var fname = oResultData.fname || "";

                var lname = oResultData.lname || "";

                var nname = oResultData.nname;

                // Guard against null value

                var fnameMatchIndex = fname.toLowerCase().indexOf(query),

                    lnameMatchIndex = lname.toLowerCase().indexOf(query),

                    nnameMatchIndex = nname.toLowerCase().indexOf(query),

                    displayfname, displaylname, displaynname;

                if (fnameMatchIndex > -1) {

                    displayfname = highlightMatch(fname, query, fnameMatchIndex);

                } else {

                    displayfname = fname;

                }

                if (lnameMatchIndex > -1) {

                    displaylname = highlightMatch(lname, query, lnameMatchIndex);

                } else {

                    displaylname = lname;

                }

                if (nnameMatchIndex > -1) {

                    displaynname = "(" + highlightMatch(nname, query, nnameMatchIndex) + ")";

                } else {

                    displaynname = nname ? "(" + nname + ")" : "";

                }

                return _gravatar(displayfname + " " + displaylname + " " + displaynname, oResultData.gravatar_lnk);

            } else {

                return '';

            }

        };

    if(ownerAC.itemSelectEvent){

    	ownerAC.itemSelectEvent.subscribe(function (sType, aArgs) {

            var myAC = aArgs[0]; // reference back to the AC instance

            var elLI = aArgs[1]; // reference to the selected LI element

            var oData = aArgs[2]; // object literal of selected item's result data

            //fill the autocomplete with value

            if (oData.nname != undefined) {

                //users

            	//Replace the mention name with replaced

            	var re = new RegExp();

            	var org = myAC.getInputEl().value;

            	var chunks = myAC.dataSource.chunks

            	// replace middle chunk(the search term) with actuall  match

            	chunks[1] = chunks[1].replace('@'+myAC.dataSource.mentionQuery,

            								  '@'+oData.nname+' ');

                myAC.getInputEl().value = chunks.join('')

                YUD.get(myAC.getInputEl()).focus(); // Y U NO WORK !?

            } else {

                //groups

                myAC.getInputEl().value = oData.grname;

                YUD.get('perm_new_member_type').value = 'users_group';

            }

        });

    }

    // in this keybuffer we will gather current value of search !

    // since we need to get this just when someone does `@` then we do the

    // search

    ownerAC.dataSource.chunks = [];

    ownerAC.dataSource.mentionQuery = null;

    ownerAC.get_mention = function(msg, max_pos) {

    	var org = msg;

    	var re = new RegExp('(?:^@|\s@)([a-zA-Z0-9]{1}[a-zA-Z0-9\-\_\.]+)$')

    	var chunks  = [];