JavaScript Type Writer

<script language=JavaScript1.2>
var it=0
function initialize(){
        mytext=typing.innerText
        var myheight=typing.offsetHeight
        typing.innerText=''
        document.all.typing.style.height=myheight
        document.all.typing.style.visibility="visible"
        typeit()
}
function typeit(){
        typing.insertAdjacentText("beforeEnd",mytext.charAt(it))
        if (it<mytext.length-1){
        it++
        setTimeout("typeit()",100)
}
else
        return
}
if (document.all) document.body.onload=initialize
</script>
<span id=typing style=visibility:hidden align=left>Welcome<BR>to<BR>my<BR>Website!</span>