function aStatus() {
var as = document.getElementsByTagName("a");
for(var i = 0; i < as.length; i++) {
as[i].onmouseover = function() {
window.status = this.title != '' ? this.title : this.innerHTML;
return true;
};
as[i].onmouseout = function() {
window.status = '';
return true;
};
}
};
...
<body onLoad="aStatus()">
...