Одновременная работа скриптов

var l = 0
var IE = document.all?true:false
document.onmousemove = getMouseXY
var ns_tt = document.createElement("div")
function getMouseXY(e) {
if (IE) {
l = event.clientX + document.body.scrollLeft
}
else {
l = e.pageX
}
ns_tt.style.left = l-150 + "px"
ns_tt.style.top = 152 + "px"
return true
}
function AddTT(tt_text){
document.body.appendChild(ns_tt)
ns_tt.id = "ns_tt"
ns_tt.innerHTML = tt_text
}
function RemoveTT() {
document.body.removeChild(document.getElementById("ns_tt"))
}

var k = 0, s = 0
var IS = document.all?true:false
document.onmousemove = getMouseXY
var ns_bb = document.createElement("div")
function getMouseXY(a) {
if (IS) {
k = event.clientX + document.body.scrollLeft
s = event.clientY + document.body.scrollTop
}
else {
k = a.pageX
s = a.pageY
}
ns_bb.style.left = k - 80 + "px"
ns_bb.style.top = s + "px"
return true
}
function AddBB(bb_text){
document.body.appendChild(ns_bb)
ns_bb.id = "ns_bb"
ns_bb.innerHTML = bb_text
}
function RemoveBB() {
document.body.removeChild(document.getElementById("ns_bb"))
}

var k = 0, s = 0
var IE = document.all?true:false
document.onmousemove = getMouseXY
var ns_bb = document.createElement("div")
var ns_tt = document.createElement("div")
function getMouseXY(e) {
if (IE) {
k = event.clientX + document.body.scrollLeft
s = event.clientY + document.body.scrollTop
}
else {
k = e.pageX
s = e.pageY
}
ns_bb.style.left = k - 80 + "px"
ns_bb.style.top = s + "px"
ns_tt.style.left = k-150 + "px"
ns_tt.style.top = 152 + "px"
return true
}
function AddBB(bb_text){
document.body.appendChild(ns_bb)
ns_bb.id = "ns_bb"
ns_bb.innerHTML = bb_text
}
function RemoveBB() {
document.body.removeChild(document.getElementById("ns_bb"))
}
function AddTT(tt_text){
document.body.appendChild(ns_tt)
ns_tt.id = "ns_tt"
ns_tt.innerHTML = tt_text
}
function RemoveTT() {
document.body.removeChild(document.getElementById("ns_tt"))
}