var l = 0, t = 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  
        t = event.clientY + document.body.scrollTop  
    }  
    else {  
        l = e.pageX  
        t = e.pageY  
    }    
    ns_tt.style.left = l + "px"  
    ns_tt.style.top = t + "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"))  
}