turn input boxes into super-usable time inputs!

SmartTime.js

SmartTime = function(options){
    var textBoxes = $(options.inputs);
    
    if(options.onerror && typeof(options.onerror) != 'function'){
        console.error('Error: onerror is not a function');
        return;
    }
    
    var fixTime = function(input){
        var hour;
        var minute;
        if(input.length < 3){//this means that the user is inputting hours
            minute = "00";
            hour = input;
            if(checkHour(hour)){ //hour is bad
                return {
                    error:true, 
                    text:input
                };
            }
        }
        else if(input.indexOf(":",0) == -1){ //this means that the user did not enter a ":"
            minute = input % 100;
            hour = Math.floor(input / 100);
            if(checkHour(hour) || checkMinute(minute)){
                return {
                    error:true, 
                    text:input
                };
            }
        }
        else{//user inputted a ":"
            minute = input.substring(input.indexOf(":")+1, input.indexOf(":")+3);
            hour = input.substring(0, input.indexOf(":"));
            if(checkHour(hour) || checkMinute(minute)){
                return {
                    error:true, 
                    text:input
                };
            }
        }
        minute+='';
            
        if(minute.length < 2){
            minute = "0"+minute;
        }
        return {
            error:false, 
            text:hour + ":" + minute
            };
    }
    
    var checkHour = function(hour){
        var highHourLimit = (options.format && options.format == '24') ? 24 : 12;
        if(isNaN(hour) || hour < 1 || hour > highHourLimit){
            //TODO: throw error
            return true;
        }else{
            return false;
        }
    }
    var checkMinute = function(minute){
        if(isNaN(minute) || minute < 0 || minute > 59){
            //TODO: throw error
            return true;
        }else{
            return false;
        }
    }
    
    $.each(textBoxes, function(index, value){
        var textBox = $(value);
        if(!textBox || !textBox.is('input') || !textBox.attr('type') == 'text'){
            console.error('Error: element #'+index + '; ' + textBox + ' is not a valid input text element' );
        }else{
            //set it up!
            textBox.focus(function(){
                textBox.select();
            });
            textBox.blur(function(){
                var result = fixTime(textBox.val());
                textBox.val(result.text);
                if(!result.error){
                    if(options.onsuccess){
                        options.onsuccess(textBox);
                    }
                }else{
                    if(options.onerror){
                        options.onerror(textBox, 'error');
                    }
                }
            });
            textBox.mouseup(function(e){
                e.preventDefault();
            });
        }
    });
}

Usage:

 EasyTime({
        inputs:'#time',     // <-- this is the jQuery selector used to bind the SmartTime to
        format:'12',      // <-- this is the time format to use. accepts: '12' or '24'
        onerror:function(input, errorText){     // <-- this is the callback function that gets called when a user enters a non-sensical short-hand time 
            console.error(errorText);
            $('#error').css('color', 'red');
            $('#error').html('!error');
        },
        onsuccess:function(input){   // <-- this is the callback that's called when a user enters a good time value
            $('#error').css('color', 'green');
            $('#error').html('complete');
        }
    });

*note: requires jQuery