remove unecessary file + better error handling

airtime_mvc/public/js/airtime/library/library.js

@@ -491,9 +491,11 @@ var AIRTIME = (function(AIRTIME) {
             },
             "fnStateLoad": function fnLibStateLoad(oSettings) {
                 var settings = localStorage.getItem('datatables-library');
-                
-                if (settings !== "") {
+               
+                try {
                     return JSON.parse(settings);
+                } catch (e) {
+                    return null;
                 }
             },
             "fnStateLoadParams": function (oSettings, oData) {
@@ -501,18 +503,22 @@ var AIRTIME = (function(AIRTIME) {
                     length,
                     a = oData.abVisCols;
                 
-                // putting serialized data back into the correct js type to make
-                // sure everything works properly.
-                for (i = 0, length = a.length; i < length; i++) {
-                    if (typeof(a[i]) === "string") {
-                        a[i] = (a[i] === "true") ? true : false;
-                    } 
+                if (a) {
+                    // putting serialized data back into the correct js type to make
+                    // sure everything works properly.
+                    for (i = 0, length = a.length; i < length; i++) {
+                        if (typeof(a[i]) === "string") {
+                            a[i] = (a[i] === "true") ? true : false;
+                        } 
+                    }
                 }
-                
+                    
                 a = oData.ColReorder;
-                for (i = 0, length = a.length; i < length; i++) {
-                    if (typeof(a[i]) === "string") {
-                        a[i] = parseInt(a[i], 10);
+                if (a) {
+                    for (i = 0, length = a.length; i < length; i++) {
+                        if (typeof(a[i]) === "string") {
+                            a[i] = parseInt(a[i], 10);
+                        }
                     }
                 }