var hintcontainer = null;  
function showhint(obj, txt) {  
    if (hintcontainer==null) {  
       hintcontainer = document.createElement("div");  
       hintcontainer.className="hintstyle";  
       document.body.appendChild(hintcontainer);  
    }  
    obj.onmouseout = hidehint;  
    obj.onmousemove=movehint;  
    hintcontainer.innerHTML=txt;  
}  
function movehint(e) {  
     if (!e) e = event; //line for IE compatibility  
     hintcontainer.style.top =  (e.clientY+document.documentElement.scrollTop+2)+"px";  
     hintcontainer.style.left = (e.clientX+document.documentElement.scrollLeft+10)+"px";  
     hintcontainer.style.display="";  
}  
function hidehint() {  
    hintcontainer.style.display="none";  
}