Leftimage position issue..

Working on Titanium-3.1.0 iOS-6

I am loading data into table view dynamically using following function:

function setData() {  
        if(Titanium.Network.networkType == Titanium.Network.NETWORK_NONE){
                     var dataArray = []; 
                     var userid = Titanium.App.Properties.getString("looking_userid");
                     var db = Ti.Database.open('scorm-db');
                     db.execute('CREATE TABLE IF NOT EXISTS assign_courses(left_image TEXT, user_id INTEGER, course_id INTEGER, module_id INTEGER,course_name TEXT, module_name TEXT, module_type TEXT ,zip_file TEXT, launch_path TEXT);');      
                     var course_list = db.execute("SELECT DISTINCT course_id,course_name,left_image FROM assign_courses where user_id = '"+userid+"' ORDER BY course_id");
                     var cnt=0;
                     while (course_list.isValidRow())  
                      { 
                       var Course_ID=course_list.fieldByName('course_id');
                       var Course_Name=course_list.fieldByName('course_name');
                       var downloadicon=course_list.fieldByName('left_image');
                        dataArray.push({leftImage:downloadicon,title:'' + Course_Name, backgroundImage:'/images/Black_Black.png',font:{fontSize:16},color:'white'});
                    course_id[cnt]= Course_ID;
 
                       course_list.next(); 
                       cnt++;
                       }
 
                    tableview.setData(dataArray);
                   db.close();  
           }  //if close
        else{
                  con=1;
                 var dataArray = []; 
                var userid = Titanium.App.Properties.getString("looking_userid");
                 var xhr = Ti.Network.createHTTPClient();  
                 xhr.open("POST", "http://enyota.org/iphoneapp/course_list.php"); 
 
                 var params = { 
                                     uid: userid  
                                     };  
                 xhr.send(params);      
                 xhr.onload = function(){  
                 var json = JSON.parse(this.responseText);  
                 var json1 = json.course;
                 var pos;  
                 for( pos=0; pos < json1.length; pos++)
                    { 
                    downloadicon = '/images/App_to_be_downloaded_icon.png'; 
            dataArray.push({leftImage:downloadicon,title:'' + json1[pos].course_name, backgroundImage:'/images/Black_Black.png',font:{fontSize:16},color:'white'}); 
                     course_id[pos]= json1[pos].course_id;
                     } 
 
                  tableview.setData(dataArray);
                 }; 
         } //else close  
 
 };

And my tableview is as:

var tableview = Ti.UI.createTableView({ 
    separatorStyle : Titanium.UI.iPhone.TableViewSeparatorStyle.NONE,
    //separatorColor : 'black',
    search:searchC,
    width:Ti.UI.FILL,
    scrollable:true,
    backgroundColor:'transparent',
    selectedBackgroundColor: 'transparent',
   //backgroundImage:'normal_butt.png',
   height:Ti.UI.FILL,
   opacity:1,
   left:0,
   top:41 
   });

When I load the setData function in online condition('else' condition in above code), then in tableview left image loaded in exact left position of row. But when I am on offline condition(if condition in above code), then left image loaded nearly at center of row .

Why tableview differenciate data position on different condition. I want the left image on left side in both condition. How it possible? Please suggest any solution for that issue...