function remove doesn't work, please help...

Hi, If someone here is willing to help me I would really appreciate

the function removeInput() of javascript at below not work properly, what i should do?

<script language="javascript">
fields = 0;
function addInput() {
    if (fields != 10) {
        var htmlText =  "<input type='text' name='addfriends[]' value='' size='auto' maxlength='45' /><br />";
        var newElement = document.createElement('div');
        newElement.id = 'addfriend'; 
	 newElement.innerHTML = htmlText;

        var fieldsArea = document.getElementById('addfriend');
	fieldsArea.appendChild(newElement);

        fields += 1;
    } else {
        alert("Only 10 friends allowed.");
        document.form.add.disabled=true;
    }
}
//field = 0;
function removeInput() {
		var div = document.getElementById('addfriend');
        var lastElement = document.removeElement('div');
        lastElement.id = 'addfriend'; 
		if (lastElement > 2) div.Element(lastElement - 1);

}
</script>

Code (markup):

Thanks a lots

 

What is removeInput supposed to do? AFAIK .id and .removeElement and .Element aren't real functions

 

I actually do not know how it should be, I'm just trying to follow the previous one (function addInput()), I just try it, so if you want give me a way out is pleased to help me, i very glad.