function?getByClass(className,parent){
????var?oParent?=?parent?document.getElementById(parent):document,
????????eles?=?[],
????????elements?=?oParent.getElementsByTagName('*');

????for?(var?i?=?0;?i<?elements.length;i++){
????????if?(elements[i].className?==?className){
????????????eles.push(elements[i]);
????????}
????}
????return?eles;
}

window.onLoad?=?drag;

function?drag()?{
????var?oTitle?=?getByClass('login_logo_webqq','loginPanel')[0];
????oTitle.onmousedown?=?fnDown;
}

function?fnDown()?{
????document.onmousemove?=?function?(event)?{
????????event?=?event?||?window.event;
????????document.title?=?event.clientX?+?'----'?+?event.clientY;
????}
}