代碼如下，做的是QQ面板那個(gè)課程function getByclass(clsName,parent){ var oParent=parent?document.getElementById(parent):document, eles=[], elements=oParent.getElementsByTagName('*'); for(var i=0,l=elements.length;i<l;i++){ if(elements[i].classname==clsName){ eles.push(elements[i]); } } return eles;}window.onload=drag;function drag () { var oTitle=getByclass('login_logo_webqq','loginPanel')[0]; oTitle.onmousedown=fnDown;}?function fnDown() { var oDrag=document.getElementById('loginPanel'); document.onmousemove=function(event){ event=event||window.event; document.title=event.clientX+','+event.clientY; }}