function isEmpty(inputStr) {
		if (null == inputStr || "" == inputStr) {
			return true;
		}
		return false;
	}
	
	
	function getAppendix(prefix, item){
		var id = item;
		var to = id.length;
		var from = prefix.length;
		var appendix = id.substring(from, to);
		return appendix;
	}
	
	function in_array(item,arr) {
		for(p=0;p<arr.length;p++) if (item == arr[p]) return true;
		return false;
		}