function clearbox(email) {
    
    if (email.value == 'Enter your email address') {
        email.value = '';
    }
    
}

function unclearbox(email) {
    
	if (email.value == '') {
        email.value = 'Enter your email address';
 	}
    
}

function clearboxSide(email) {
    
    if (email.value == 'Enter email address') {
        email.value = '';
    }
    
}

function unclearboxSide(email) {
    
	if (email.value == '') {
        email.value = 'Enter email address';
 	}
    
}