Merge pull request #154 from KevinHoward/master

Determine if selectorText is defined before applying toLowerCase method.

src/dialogs.js

@@ -531,9 +531,10 @@ angular.module('dialogs.main',['dialogs.services','ngSanitize']) // requires ang
 			 			// try to find css rule .fa, in case style sheet has been concatenated
 			 			_rules = _sheets[i].cssRules;
 			 			for(var x = (_rules.length - 1);x >= 0;x--){
-			 				if(_rules[x].selectorText.toLowerCase() == '.fa'){
+			 				if(typeof(_rules[x].selectorText) === 'string' && _rules[x].selectorText.toLowerCase() === '.fa'){
 			 					dialogsProvider.useFontAwesome();
-			 					break sheetLoop; // done, exit both for loops
+				 				break sheetLoop; // done, exit both for loops
+
 			 				}
 			 			}
 			 		}