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// Check if items in one array are in items of another array 
  function arrayInArray(arr1, arr2){
		for(var i = 0, len = arr1.length; i < len; i++){
			for(var j = 0, len2 = arr2.length; j < len2; j++){
				if(String(arr1[i]) === String(arr2[j])){
					return true;
				}
			}
		}
		return false;
}