salesforce Custome button execute javascript and Jquery to update the Record

{!REQUIRESCRIPT("/soap/ajax/29.0/connection.js")} {!REQUIRESCRIPT('//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js')} {!REQUIRESCRIPT('//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js')} var newRecArray = []; if('{!$Profile.Name}' != 'Branch OAC' && '{!$Profile.Name}' != 'System Administrator'){ alert(' Sorry insufficient access to this button !'); }// end of profile if conditin else{ jQuery(function() { jQuery('head').append('<link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/themes/start/jquery-ui.css" type="text/css" />'); var html ='<div id="dialog" title="Enter Comment"> <textarea id="txtn" rows="4" cols="30" id="rsn"></textarea></div>'; if(!jQuery('[id=dialog]').size()){ jQuery('body').append(html); } var recordtype= sforce.connection.query("SELECT Name, id from RecordType WHERE Name='LiveStockFinal DE' And SobjectType='Insurance_Detail__c'"); var records = recordtype.getArray("records"); var appRec = new sforce.SObject("Insurance_Detail__c"); appRec.Id= "{!Insurance_Detail__c.Id}"; var currentDate="{!Now()}"; jQuery( "#dialog" ).dialog({ autoOpen: true, modal: true, show: { effect: "explode", duration: 200 }, hide: { effect: "explode", duration: 200 }, buttons: { "Ok": function() { var sbComment= $('#txtn').val(); appRec.Status__c='Discrepant'; appRec.RecordTypeId=recordtype.records.Id; appRec.Sent_Back_Comment__c=sbComment; appRec.Sent_Back_Date__c= new Date(); newRecArray.push(appRec); result=sforce.connection.update(newRecArray); jQuery( this ).dialog( "close" ); window.location.reload( true ); }, Cancel: function() { jQuery( this ).dialog( "close" ); } } }); }); }