江湖救急?。?！那個給fndown函數(shù)里的onmousemove綁的function匿名函數(shù)有什么用？為什么要在這個函數(shù)里調(diào)用外部函數(shù)fnmove，直接把fnmove寫在那個匿名函數(shù)里不行嗎？比如這樣：

function fndown(event) {
? ?var event=event||window.event;
? ?var odrag=document.getElementById("loginPanel");
? ?var spanX=event.clientX-odrag.offsetLeft;
? ?var spanY=event.clientY-odrag.offsetTop;
? ?document.onmousemove=function (e) {
? ? ? ?e=event||window.event;

? ? ? ?odrag.style.left=e.clientX-spanX+"px";
? ? ? ?odrag.style.top=e.clientY-spanY+"px";
? ? ? ?document.title=e.clientY;
? ?}