//?獲取class的函數(shù)，這是因為getElementByClassName針對IE10之前的無效
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;

}
//鼠標按下時的函數(shù)
function?fnDown(){
????document.onmousemove=function(event){
?????????event=event||window.event;
?????????document.title=event.clientX+','+event.clientY;
????}
}