pwdField.onblur = function () {
            if (/^[0-9a-zA-Z]{6,20}$/.test(pwdField.value)) {
                if (/^\d{6,20}$|^[a-z]{6,20}$|^[A-Z]{6,20}$/.test(pwdField.value)) {
                    levelOne.style.backgroundColor = 'red';
                    levelTwo.style.background = 'gray';
                    levelThree.style.background = 'gray';
 
                } else if (/^[0-9a-z]{6,20}$|^[0-9A-Z]{6,20}$|^[A-Za-z]{6,20}$/.test(pwdField.value)) {
                    levelOne.style.backgroundColor = 'red';
                    levelTwo.style.backgroundColor = 'orange';
                    levelThree.style.background = 'gray';
 
                } else {
                    levelOne.style.backgroundColor = 'red';
                    levelTwo.style.backgroundColor = 'orange';
                    levelThree.style.background = 'green';
 
                }
            } else {
                levelOne.style.background = 'gray';
                levelTwo.style.background = 'gray';
                levelThree.style.background = 'gray';
            }
 
        }